If it seems a bit depressing that the most important thing you can do to improve performance is no fun, take consolation in this fact: It must be so. If the activities that lead to greatness were easy and fun, then everyone would do them and they would not distinguish the best from the rest. The reality that deliberate practice is hard can even be seen as good news. It means that most people won’t do it. So your willingness to do it will distinguish you all the more.

Geoff Colvin, Talent is Overrated: What Really Separates World-Class Performers from Everybody Else, New York, 2008, p. 72