There are two new books out which describe how diificult it is to succeed, and dominate, in a particular field in this country. One, Inside Apple by Adam Lashinsky, concerns the workings of Steve Jobs. The subject of the other, The Big Miss by Hank Haney, is golfer Tiger Woods. Both are fascinating reads.
Then again, regarding golf, we have the example of Masters winner Bubba Watson, who is very Do-It-Yourself, with no entourage and no coach. He doesn't even study video of himself. For Bubba, natural is best-- and yet he wins.