That book 'Bounce' is really great. Especially if you need a boost to your self-esteem after playing/watching/knowing about a feat in your sport/hobby. But really, it is a good read (I got the audio-book and haven't finished though, I'm listening about the superstitions part) What the book says is that anyone can get to the level of expert in any given area by spending 10 thousand hours of purposeful practice. If you play a tourney where they allow you to play in hearts at the two-level with 18 HCP's and only five cards in spades between you and your partner, I wouldn't consider that purposeful practice. If, on the other hand, you discuss with your partner this situation and imagine what you would do with the opponents' cards, how you could have gotten to a spade contract with their cards, whether there would have been more competition and how the defense and play would go better in each case, then that might just be purposeful practice.