That’s what it says in this New York Times Magazine article:
A Star Is Made
By STEPHEN J. DUBNER and STEVEN D. LEVITT
May 7, 2006
…when it comes to choosing a life path, you should do what you love — because if you don’t love it, you are unlikely to work hard enough to get very good. Most people naturally don’t like to do things they aren’t “good” at. So they often give up, telling themselves they simply don’t possess the talent for math or skiing or the violin. But what they really lack is the desire to be good and to undertake the deliberate practice that would make them better.