Win or lose or draw, you always go back and critique your performance and say you could have done things better. Even if I put the guy away in one round, I can go back and say I made a lot of mistakes and need to tighten up. But that's the type of person I am. Improve. Improve. Improve. When I lose I come back stronger than ever.
Fighting comes down to who you are as a person. With B.J. Penn, he has no problems, not a hard upbringing and came up with money or whatever and he's just a fighter, he enjoys the fight and he refined his skills so I don't think it necessarily has to be a rough upbringing for guys to be great fighters.