If you are spending 10,000 hours trying to make yourself an expert at something, you might be wasting your time:

Like many others who read Malcolm Gladwell’s book “Outliers” when it came out five years ago, I was impressed by the 10,000-hour rule of expertise. I wrote a column (for a different publication) espousing the rule, which holds that to become a world-class competitor at anything from chess to tennis to baseball, all that’s required is 10,000 hours of deliberate practice.

David Epstein has convinced me I was wrong. His thoroughly researched new book, “The Sports Gene,” pretty much demolishes the 10,000-hour rule -- and much of “Outliers” along with it.

The practice-makes-perfect theory is certainly inspiring. In 2009, and after reading Gladwell’s book and some of the associated research, a 30-year-old man named Dan McLaughlin decided to quit his job as a photographer, determined to practice golf for 10,000 hours and turn pro -- even though his previous experience consisted of just two trips to a driving range as a child. He now practices six hours a day, and is scheduled to hit 10,000 hours in late 2016.

Epstein’s book suggests that McLaughlin better have a backup plan, because, while real elite athletes have put in plenty of practice time, their aptitude is enhanced by their genes.

Read on. More here. And sorry if I ruined your day.