The Power of GMAT Mistakes: Your Path to a Higher Score

Many GMAT aspirants dread making mistakes during their preparation and on the actual exam. Tales from online forums often highlight dramatic score improvements, suggesting that minor tweaks in strategy can lead to significant gains. However, such narratives can be misleading. In reality, substantial score enhancements typically require time, and errors play a pivotal role in this journey. The GMAT assesses a broad spectrum of concepts and skills, and mistakes provide invaluable insights for crafting an effective study strategy. A meticulously maintained error log becomes an essential tool, enabling you to systematically identify and address areas of weakness, build upon your strengths, and structure your study sessions efficiently.

Redefining ‘Error’ in GMAT Preparation

To maximize the benefits of an error log, it’s crucial to adopt a broad definition of “error.” This encompasses:

Questions answered incorrectly
Questions that consumed excessive time, even if answered correctly
Questions where uncertainty led to guesses
Questions where you believed your approach was correct but still erred

These types of mistakes, when analyzed thoroughly, help uncover the specific mental steps where things go wrong and can inform your study approach moving forward.

Deconstructing the Problem-Solving Process

Understanding the nuances of problem-solving can illuminate where errors occur. Drawing inspiration from cognitive psychologist Don Norman, we can segment the process into distinct steps:

Identify the topic

Select a framework

Recall and evaluate the framework

Input data

Execute the steps

Each of these steps can be improved through focused reflection and deliberate practice. Errors in any one of them could result in a wrong answer, or even worse, a correct answer reached through an inefficient or unreliable process.

Illustrative Example

Consider the following problem:

Francisco can fill a certain completely empty box with toy cars in f minutes. His sister, Geraldine, can empty the full box of all cars in g minutes, where f < g. If the box can hold a maximum of j cars and is currently ⅓ full, and both Francisco and Geraldine are working to fill and empty the box of cars at their respective constant rates, which of the following represents the number of minutes that it will take to fill the box entirely with cars, in terms of f, g, and j?

Let’s walk through the problem using the five steps.

Identify the Topic – This is a rate problem involving opposing actions.

Select a Framework – Use the concept of combined work rate.

Recall and Evaluate the Framework – Evaluate whether your chosen method (combined rates) actually fits.

Input Data – Carefully translate the problem statement into rates and equations.

Execute – Carry out calculations and simplify expressions accurately.

Any mistake in any of these steps, whether conceptual or arithmetic, could derail your solution. When logging errors, note which step broke down.

Learning from Errors in Initial Steps

Each step in the problem-solving process can reveal specific areas for improvement:

Identifying the topic

If you misidentify the topic, such as thinking a question is about ratios when it’s actually about proportions, you’re likely to apply the wrong method. The fix? Practice recognizing problem types based on keywords and formats. This skill sharpens with repetition and focused review.

Selecting a framework

Even when you recognize the type of problem, you may choose an inefficient or incorrect strategy. For example, using brute-force algebra for a geometry question instead of leveraging known theorems. Build a catalog of strategies and learn to choose the most efficient ones for each situation.

Recalling and evaluating the framework

Sometimes you know what method to use but don’t fully remember how to implement it. This is where targeted review comes in. Ensure that when you adopt a strategy, you understand it well enough to apply it flexibly. Practice using it in different contexts until it becomes second nature.

The Importance of Practice and Adaptability

Adopting new strategies can feel awkward initially. It’s like trying to use a new tool—less efficient at first but more effective in the long run. You might be slower using a new method, but once mastered, it can dramatically improve your speed and accuracy.

However, even the best strategies won’t work on every question. Some questions are better skipped. Recognize when to move on, especially if a problem drains too much time during practice or in a test. Mark it for review later but prioritize easier wins first.

Investing Time Wisely

Before investing time in executing a solution, ensure you’ve successfully completed the first three steps:

You understand what kind of problem it is
You have selected a sound framework
You know how to apply it

Only then should you proceed to input data and solve. Skipping this process often leads to mistakes or inefficient solutions.

Understanding ‘Slips’ vs. ‘Mistakes’

Not all errors are the same. Understanding the difference helps you tailor your study efforts.

Mistakes

Mistakes come from flawed reasoning or a gap in understanding. Maybe you misapplied a rule or misunderstood what the question asked. These require conceptual review, perhaps even a revisit of foundational materials.

Slips

Slips occur despite knowing the right approach. These include calculation errors, misreading a number, or skipping a step. Often, they’re a result of:

Rushing
Anxiety
Fatigue
Distraction
Overconfidence

These don’t necessarily indicate a lack of understanding, but they still need addressing—often by improving test-taking discipline and routine.

Strategies to Minimize Slips

Minimizing slips can make a big difference in your GMAT score. Here are practical strategies to help you stay sharp:

Slow down

A few seconds of extra care can save you from redoing the entire question. You don’t need to be fast—you need to be consistent and accurate.

Avoid autopilot

Even if you’ve seen a similar question before, don’t assume the solution is the same. Read carefully and follow your steps methodically.

Manage cognitive load

Don’t try to hold everything in your head. Use scratch paper to jot down numbers, operations, and logic. Offloading these details helps you think more clearly.

Build better frameworks

Using structured methods reduces the chance of missteps. For example, always label your equations and write out unit conversions rather than skipping steps.

Practice under pressure

Simulate real test conditions to reduce anxiety. Knowing what to expect and practicing time management can calm nerves.

Use a warm-up routine

Start your study sessions with a set of simple questions to build momentum and confidence. A routine prepares your mind for focused work.

Eliminate distractions

Study in a quiet space, silence notifications, and set dedicated time blocks for focused work. Mental focus is crucial for accuracy.

Improvement doesn’t just happen with time—it happens through active reflection and adaptation. Errors are signposts that point toward your biggest opportunities for growth. By logging and analyzing a wide variety of problems, you begin to recognize patterns: maybe you struggle with overlapping sets, or maybe you’re too slow with number properties.

Use this knowledge to customize your study plan. Revisit your weakest steps, drill on the concepts that trip you up, and refine your approach until it’s second nature. The GMAT rewards process, not just answers. Master the process, and the right answers—and scores—will follow.

Instead of fearing mistakes, embrace them. They are not just indicators of failure, but milestones of progress on your journey to GMAT success.

Building upon the insights from Part 1, we now delve deeper into the strategies that transform GMAT errors into stepping stones for success. Understanding and analyzing your mistakes is not just about recognizing what went wrong but about developing a systematic approach to prevent similar errors in the future. This part focuses on practical techniques and methodologies to harness the power of errors for continuous improvement.

Developing a Comprehensive Error Log

An error log is more than a list of questions you got wrong; it’s a diagnostic tool that helps identify patterns in your mistakes. To create an effective error log:

Record the question type (e.g., Problem Solving, Data Sufficiency, Sentence Correction).
Note the specific content area (e.g., algebra, geometry, modifiers).
Describe the nature of the error (e.g., conceptual misunderstanding, calculation error, misreading the question).
Reflect on why the error occurred and how to avoid it in the future.

Regularly reviewing this log enables you to pinpoint recurring issues and tailor your study plan accordingly.

Categorizing Errors for Targeted Improvement

Understanding the types of errors you make allows for more focused remediation. Common categories include:

Conceptual Errors: Misunderstanding the underlying principle or concept.
Procedural Errors: Incorrect application of formulas or methods.
Calculation Errors: Simple arithmetic mistakes.
Comprehension Errors: Misinterpreting the question’s requirements.
Time Management Errors: Spending too much or too little time on a question.

By categorizing your errors, you can prioritize areas that need the most attention and develop strategies to address them.

Implementing Reflective Practice

Reflective practice involves analyzing your thought process during problem-solving to identify where it deviated. After completing practice questions:

Ask yourself what your initial approach was and why.
Consider alternative methods that might have been more efficient.
Evaluate whether you recognized the question type correctly.
Reflect on time management and whether you allocated time appropriately.

This introspection helps in developing metacognitive skills, allowing you to become more aware of your thinking patterns and adjust them for better performance.

Utilizing Timed Practice Sessions

Timed practice sessions simulate test conditions and help in building stamina and time management skills. To maximize their effectiveness:

Set strict time limits for each section, mirroring the actual exam.
Practice pacing strategies, such as allocating specific time per question.
After each session, review not only the incorrect answers but also the questions where you were uncertain or took too long.

This approach helps in identifying not just knowledge gaps but also issues related to test-taking strategies.

Embracing Adaptive Learning Techniques

Adaptive learning involves adjusting your study plan based on ongoing performance assessments. Tools and strategies include:

Using GMAT prep software that adapts to your performance, offering questions that target your weak areas.
Regularly updating your error log to reflect new patterns.
Setting specific, measurable goals for improvement in identified areas.

By continuously adapting your study plan, you ensure that your preparation remains aligned with your evolving needs.

Seeking Feedback and Support

Engaging with peers, tutors, or study groups can provide new perspectives on your errors. Benefits include:

Gaining insights into alternative problem-solving methods.
Receiving explanations that clarify confusing concepts.
Sharing strategies for common pitfalls.

Collaborative learning fosters a deeper understanding and keeps you motivated through shared experiences.

Incorporating Mindfulness and Stress Management

Test anxiety can lead to errors unrelated to your actual knowledge or skills. Techniques to manage stress include:

Practicing mindfulness meditation to improve focus and reduce anxiety.
Developing a pre-test routine that includes relaxation exercises.
Ensuring adequate rest and nutrition leading up to the exam.

Managing stress effectively ensures that your performance reflects your true capabilities.

Establishing a Growth Mindset

Adopting a growth mindset means viewing errors as opportunities for learning rather than as failures. This perspective encourages:

Persistence in the face of challenges.
Openness to feedback and willingness to adjust strategies.
Confidence in the ability to improve through effort and practice.

A growth mindset transforms the learning process into a positive and empowering experience.

Turning GMAT errors into a roadmap for success requires a strategic and reflective approach. By systematically analyzing mistakes, adapting study plans, seeking support, and managing stress, you can transform weaknesses into strengths. Embrace each error as a valuable lesson on your journey to achieving your target GMAT score.

We explored the psychological and strategic value of GMAT errors. In Part 2, we turned these mistakes into practical tools for targeted improvement. Now in Part 3, we complete the journey by examining advanced techniques to track, analyze, and eliminate recurring GMAT errors — and ultimately master the exam. This article focuses on long-term improvement, real-world study tactics, and leveraging your errors for deep conceptual understanding and exam-day readiness.

Building a Personal Error Database

While an error log is the first step, you can evolve it into a dynamic and personalized database that becomes the core of your GMAT study process.

To build this, start by aggregating every error you make across all GMAT sections — Quantitative, Verbal, Integrated Reasoning, and Analytical Writing. Each entry should include:

The source of the question (e.g., Official Guide, Manhattan Prep, GMAT Club)
The specific content area (e.g., rates and work, modifiers, parallelism)
Your original answer and reasoning
The correct answer with explanation
Notes on what confused you
A tag or label for sorting (e.g., “geometry + rushed,” “SC + misread modifier”)

Eventually, you’ll be able to sort your errors by frequency, section, and cause — and drill those areas relentlessly. This is not just organization for its own sake; this is how high scorers eliminate persistent weaknesses.

Scheduling Intentional Error Review Days

One mistake many test takers make is only reviewing errors incidentally during regular practice sessions. Instead, you should designate weekly or bi-weekly “Error Days” solely dedicated to reviewing past mistakes.

On these days, avoid new practice material and instead:

Revisit 15–25 previous errors from your database
Attempt each question again, without reviewing your old answer
Rewrite the solution with a correct approach
Write a brief reflection on what changed between now and your first attempt

This periodic re-engagement with your errors trains your brain to develop better problem-solving patterns. Even more, it provides a real sense of progress — you’ll see how many of your old weaknesses are now automatic wins.

Practicing “Reverse Learning”

A powerful method to deepen your understanding of errors is to teach yourself backward from the correct answer. This method is called “reverse learning.”

When you get a question wrong:

Start by looking at the correct answer.

Work backward to understand why it is right.

Ask yourself what clues you missed or misinterpreted.

Try solving the problem again from scratch using only the clues that led to the correct choice.

This approach is particularly powerful in Verbal sections (especially Critical Reasoning and Reading Comprehension), where logic chains matter more than pure knowledge. Learning to spot the subtle logical triggers that distinguish right from wrong builds deep intuition and decision-making skill.

Turning Repeated Errors into “Micro Drills”

If your error log reveals that you keep missing similar types of questions — like Data Sufficiency comparisons, subject-verb agreement, or overlapping sets — don’t just note them. Convert them into micro drills.

Micro drills are small, focused sets of 5–10 questions that target one specific weakness. You can:

Create your own using official or third-party question banks
Use GMAT Club’s tagged filters to isolate problem types
Write your own questions (an excellent way to understand concepts deeply)

After completing a micro drill, rate your confidence on each question and reflect on how your thinking has improved since the last review. Repeat these drills weekly to ensure long-term retention.

Documenting Thought Process Errors

Sometimes, the error is not the final answer, but the path you took. Documenting how you thought — not just what you answered — is critical.

Ask yourself:

Did I understand what the question was truly asking?
Did I rush through key details?
Did I eliminate correct choices in Verbal due to bias or assumption?
Did I double-check units, signs, or assumptions in Quant?

Write down a sentence or two describing your thought process mistake for every error you make. Over time, patterns will emerge: maybe you rush Verbal choices or misread conditionals in CR. Once you know your tendencies, you can design techniques to counteract them.

Incorporating Error Lessons into Flashcards

Flashcards are not just for vocabulary or formulas. You can use them to memorize error patterns.

Create flashcards for:

Traps that fooled you (“SC: ‘being’ used correctly in exception cases”)
Rules you misunderstood (“Work problems: use rate = 1/time”)
Concepts you keep forgetting (“CR: conclusion vs assumption difference”)
Logical structures (“If A, then B. Not B → Not A = wrong inference”)

Use apps like Anki or Quizlet to organize and review these flashcards using spaced repetition. This makes your error review automatic, portable, and efficient.

Designing Test Simulations Around Weak Areas

Most students take full-length practice tests to simulate exam day. That’s good — but if you want to maximize improvement from errors, you also need to simulate stress scenarios around your known weaknesses.

For instance:

Start a 30-minute session with a block of your hardest error types
Mix easy and hard questions from the same category to simulate GMAT unpredictability
Practice under tight time constraints (e.g., 90 seconds per quant question)

This kind of pressure-practice builds resilience and removes the fear factor. When you see a familiar trap on test day, you’ll handle it with calm confidence because you’ve already seen it — and beat it — before.

Learning from Others’ Errors

One of the most underrated ways to learn is to study other people’s mistakes. On forums like GMAT Club, you can read through entire error deconstructions by other students.

This gives you:

New ways to understand difficult questions
Exposure to traps that didn’t fool you — but might have
Insights into how high scorers think differently

Actively reading others’ error logs or debrief posts is like studying with a group of tutors. You not only avoid making the same mistakes — you also accelerate your understanding by seeing how different minds approach the same problems.

Setting Up a Recovery System for Error-Prone Days

Everyone has off days — days when mistakes pile up. These days are not failures. They are opportunities to test your recovery system.

Build your own “error recovery protocol”:

Step away from the test for a few hours
Reflect: was it fatigue, stress, or lack of focus?
Choose 3–5 of the worst errors and fix them slowly
End the day with easier questions to rebuild confidence

By creating a recovery process, you ensure that bad practice days don’t derail your progress. In fact, they become productive pivots toward clarity and resilience.

Knowing When an Error Is Solved

A common question: how do you know when you’ve really solved an error? The answer lies in depth and durability.

An error is truly solved when:

You can solve similar questions correctly three times in a row on separate days
You can explain the concept to someone else
You no longer hesitate when faced with that error type
Your reasoning path has changed — not just the answer

Never settle for “I see why it’s B.” Instead, aim for “I’d never fall for that trap again because I now recognize the structure of the question.”

Final Advice: Embrace the Messy Middle

Improving through errors is not a straight line. Some days you’ll feel smarter than ever. Other days, you’ll wonder if you’re regressing. That’s normal.

The messy middle — where improvement is invisible, slow, and filled with setbacks — is where real transformation happens. Keep tracking your progress, refining your study methods, and trusting the system.

Your goal is not to avoid errors entirely. Your goal is to understand them so deeply that they no longer control your score.

Errors on the GMAT are not obstacles; they are the most direct path to excellence. By tracking, analyzing, and transforming your mistakes, you build not only knowledge but confidence and clarity. You don’t need to fear errors — you need to welcome them.

The most successful GMAT students aren’t the ones who make the fewest mistakes. They are the ones who make the most — and learn the fastest.

Let your errors be your map. Let your curiosity be your compass. And let your consistent, focused effort lead you to your target score and beyond.

Advanced Error Analysis Techniques and Long-Term Score Growth

While the earlier parts of this series laid the foundation for identifying, analyzing, and responding to GMAT errors, a deeper level of mastery involves evolving your strategies as your skill set grows. At advanced levels, the value of errors is not just in what they reveal about content knowledge or procedural flaws—but also in how they point to long-term habits, cognitive patterns, and deeper learning behaviors. This final part explores high-level approaches to error analysis, mindset shifts, and systems that promote enduring score growth.

Understanding the Plateau Effect in GMAT Prep

One of the most frustrating experiences in GMAT preparation is the plateau—where you study consistently, feel like you’re improving, but your score doesn’t budge. Plateaus often happen when the errors being made are not obvious. They’re no longer due to content gaps or procedural missteps, but instead due to subtle inefficiencies in execution, reasoning, or test behavior. The key to breaking through a plateau lies in refining how you analyze and respond to these hidden patterns.

Advanced error analysis at this stage means reviewing not just what went wrong, but why your current strategies failed to prevent the mistake. Did you rush even though you recognized the structure? Did your framework lead you in the wrong direction? Was your confidence level inappropriate for the problem’s difficulty? These types of questions go beyond accuracy and dive into metacognition—thinking about your own thinking.

Layered Review: Moving Beyond Simple Logs

Most students are familiar with a basic error log: the problem number, the source, whether it was correct or incorrect, and possibly a note on the concept. That’s a strong start, but it’s insufficient for advanced learners.

A layered review system captures multiple levels of information per problem:

Content Category: What topic was tested (rates, geometry, modifiers, etc.)?

Framework Used: What method or structure did you employ to solve it?

Confidence Level: How confident were you in your answer? (High, Medium, Low)

Time Spent: Did you spend within, above, or below your target time?

Error Type: Was this a slip (execution), a mistake (conceptual), or a behavior-driven error?

Error Trigger: What was the root cause? (e.g., overreliance on a flawed shortcut, misread word, decision fatigue)

Corrective Action: What specific step will you take to avoid this error again?

By capturing these layers, you’re no longer just logging errors—you’re building a personalized diagnostic tool that evolves alongside your preparation.

Patterns of Thought: Diagnosing Flawed Reasoning

At advanced stages, many errors are not due to lack of knowledge but due to subtle cognitive biases and reasoning flaws. Common patterns include:

Confirmation bias: Seeing what you expect to see in a question stem, rather than what’s written.
Anchoring: Getting fixated on a number, phrase, or technique early in the problem and failing to reassess later steps.
Overconfidence bias: Assuming correctness based on familiarity with a topic rather than verifying all steps.
Satisficing: Choosing the first plausible answer without fully evaluating all options.

Recognizing and labeling these patterns when they arise can improve not just your GMAT performance but your general decision-making. When reviewing an error, ask: What was I thinking, and why did I think it made sense at the time? Then explore alternative reasoning paths that would have led you to the correct answer.

Introducing the Error Tree Method

The “Error Tree” is a technique borrowed from root-cause analysis in engineering. The idea is to map errors to their foundational causes by repeatedly asking “Why?” This approach creates a visual model of how one surface-level mistake can be rooted in deeper, correctable behaviors or decisions.

Example:

Error: Choose the wrong answer in a Critical Reasoning question.

Why? Misinterpreted the conclusion of the argument.
- Why? Focused on the premise with a statistic instead.
  - Why? Habitually anchor on numerical information.
    - Why? Feel more comfortable with quantifiable data.
      - Why? Lack of confidence in verbal reasoning under pressure.

With this chain, you now know that the problem wasn’t just in misreading—it was in a systemic reliance on quantifiable evidence due to confidence imbalances. Your correction plan might include: more focused CR practice under timed conditions, deliberately emphasizing abstract reasoning, and diversifying the types of CR arguments you review.

Feedback Loops and Growth Cycles

Error analysis should not be a static process. Instead, it should function as a feedback loop. Every round of practice and review generates insights that should feed directly into your next study cycle. These loops promote continual improvement rather than stagnation.

Here’s how to structure your growth loop:

1. Assess Performance: Take a timed section or full exam.
2. Perform Deep Error Analysis: Use layered review and error trees.
3. Identify Trends: Look for recurring problem types, behaviors, or time management issues.
4. Adjust Study Focus: Choose drills, strategies, or resources tailored to these trends.
5. Re-practice with Intention: Apply new strategies under similar test conditions.
6. Retest and Reassess: Determine whether those adjustments made a difference.

Repeat: Begin the next loop with refined clarity.

These cycles should become the rhythm of your preparation—one that ensures your efforts are always guided by results, not just time spent.

Embracing Productive Failure

At this stage, students often fall into the perfectionism trap: feeling frustrated or demoralized by any error, even though occasional errors are inevitable and even necessary for growth. The key is distinguishing between destructive failure (repeating the same error out of neglect) and productive failure (making a new error that reveals something you didn’t previously understand).

To embrace productive failure:

Practice with problems just above your current level of comfort. These are most likely to generate insightful errors.
Set specific error goals. For example, aim to identify three new conceptual blind spots this week, rather than trying to go error-free.
Reflect weekly not only on what went wrong, but what surprised you. Surprises are learning opportunities in disguise.

A student who never makes errors in practice is not stretching far enough. A student who repeats the same error is not learning fast enough. The ideal GMAT prep environment encourages controlled, insightful failure and rapid recovery.

Quantitative Versus Verbal Error Profiles

Different sections of the GMAT require different types of error analysis. Here’s how to tailor your strategy:

Quantitative Errors

Quant is often more procedural, so errors here tend to fall into:

Conceptual gaps: Misunderstanding of core principles (e.g., exponents, probability, rates).
Application errors: Knowing the concept but applying it in the wrong context.
Execution slips: Doing the right steps with the wrong numbers or incorrect arithmetic.

Error analysis in Quant should include reworking problems with different approaches (e.g., algebraic, graphical, plug-in) and reviewing the language used in question stems that caused misreads.

Verbal Errors

Verbal is more interpretive and logic-based, so errors often arise from:

Misreading structure: Missing conclusions, contrasts, or evidence markers.
Grammatical misinterpretations: Failing to understand what a clause or modifier actually means.
Logical reasoning gaps: Accepting assumptions without challenge or overlooking flaws in argument structure.

Verbal error logs benefit from textual annotations—marking sentence structures, argument components, and recurring traps. You can also build a “grammar or logic bank” where you log errors by rule or reasoning flaw type, reinforcing abstract concepts with concrete examples.

The Long-Term View: From 600s to 700s

Moving from a 600-range score to 700+ is not about getting every question right—it’s about making fewer high-cost errors and improving your decision-making on medium and hard questions. At this level, performance is more about avoiding unforced errors than mastering every detail.

Key differences between 600- and 700-level test takers include:

Selectivity: 700-level test takers skip or guess more strategically.
Clarity: They recognize what a problem is really testing almost immediately.
Execution: They have routines that minimize careless mistakes.
Adaptability: They abandon failed strategies mid-question without panic.
Metacognitive awareness: They constantly self-monitor their process, time, and emotional state.

Your error log is your mirror: it shows you when you’re acting like a 700+ scorer and when you’re not. Review it weekly and ask: What does this log say about the version of me who showed up to study this week?

Environment, Habits, and Error Reduction

Beyond the test itself, your external habits matter deeply. Many avoidable errors stem from poor sleep, poor focus, and inconsistent practice environments.

Create a consistent study space free of distractions.
Limit tech interruptions: Silence phones and use browser blockers during study.
Establish warm-up routines: Start each session with 2-3 confidence-boosting problems.
Simulate test days weekly: Take practice tests at the same time and in the same conditions as your official exam.

Good habits outside of test prep support good performance during test prep. Most importantly, treat every practice set as a chance to refine your process—not just to check your score.

Final Thoughts

Error analysis is not just a tool; it is a philosophy. It’s the belief that failure is not the opposite of success, but a necessary step toward it. Every GMAT error contains a hidden lesson about your thinking, your habits, and your growth process. Your job is to extract that lesson and use it to elevate your game.

The more detailed, honest, and disciplined your review process, the more you’ll transform your errors from roadblocks into stepping stones. In this transformation lies the path to your highest possible GMAT score—not because you eliminated every mistake, but because you learned from everyone.

If you’re seeking additional resources—like an advanced error log template, structured review tools, or frameworks for decision-making under pressure—reach out. High-level GMAT prep is not just about doing more. It’s about thinking better.