The Malcolm Gladwell myth
This story below is interesting because it makes you wonder if you really need 10,000 hours to get great at something or you if just need to be obsessive about a subject.
Yes, this story is anecdotal but it's still worth considering. Here's a good quote from this article.
The Dan Plan crystallizes the sheer number of variables, beyond deliberate practice, involved in attaining excellence in a field—not least, reliable access to effective instruction and the support system and motivation provided by a cohort of peers striving toward the same goal.