I've heard that it takes 10,000 hours to master your craft. Is it true?

As far as I know, Malcolm Gladwell's 10,000-hour rule is not a recipe for success or automatic recognition: it points out that the top performers in life are usually the ones who have practiced and pushed with every exercise for 10,000 hours. Exercise is not a substitute for natural ability, but the people who practice and practice themselves will master their talents.

Despite the bait headline, this article is a solid summary of the arguments surrounding this theory: http://businessinsider.com/expert-rule-10000-hours-not-true-2017-8