Outliers is a classic book on what makes up success by Malcolm Gladwell. He argues that highly successful people – the outliers – do not succeed just by simply working harder. Being there at the right place at the right time, among other factors, is critical too.
Gladwell describes the “Rule of 10,000” which says that it takes about 10,000 hours of practicing a task for someone to achieve mastery in it. It can be music, computer programming, writing, sports – anything (and certainly for knowledge work!).
“… ten thousand hours of practice is required to achieve the level of mastery associated with being a world-class expert — in anything. In study after study, of composers, basketball players, fiction writers, ice skaters, concert pianists, chess players, master criminals, and what have you, this number comes up again and again. Of course, this doesn’t address why some people get more out of their practice sessions than others do. But no one has found a case in which true world-class expertise was accomplished in less time. It seems that it takes the brain this long to assimilate all that it needs to know to achieve true mastery.” — “Outliers” by Malcolm Gladwell
Doing the maths, practicing for 40-hours in a week and 180 hours in a month, it takes about 5 years to achieve mastery in it. Obviously, what it means to be a master and what the world of mastery is can vary, but in general the rule models the effort required to become really good at something. Gladwell gives examples of The Beatles, Bill Gates and Paul Allen to prove the theory. All of them put in 10,000 of practicing music or programming before they really became masters at it.