Mastery is not about the number of hours spent, but the number of meaningful repetitions performed. The key to improvement is not simply the passage of time but the number of times we actively engage with the process, refine our techniques, and correct our mistakes. A musician who plays 10,000 times with focus and adaptation will progress much faster than one who simply clocks in hours of mindless practice. Likewise, a writer who drafts 10,000 paragraphs, refining them with each attempt, will develop their craft far more effectively than someone who spends 10,000 hours mostly staring at blank pages.
Consider the difference between two aspiring painters. One spends 10,000 hours in a studio, occasionally picking up a brush, watching tutorials, or idly sketching. The other completes 10,000 paintings—each one an attempt, a refinement, an experiment. Who do we think will be better? The sheer number of attempts forces the second painter to confront mistakes, experiment with new techniques, and internalise lessons through direct experience.
A bad golf swing practised for 10,000 hours will only ingrain bad habits. But 10,000 focused swings, each slightly adjusted, each reviewed with feedback, will produce real progress. Mastery is not about passive endurance but active iteration—learning, failing, correcting, and repeating.
This is why elite performers in every field—from sports to business to the arts—improve through deliberate cycles of action and feedback, not sheer hours spent. It is not time alone that builds mastery but the number of meaningful engagements with the skill.
Don’t just put in the time. Put in the reps. Make 10,000 attempts. Iterate, refine, and repeat. Time will pass regardless—but skill is built in the doing.