People can do more than they ever believe they can do. Physically, mentally, academically. You have to be pushed. It hurts. But it's worth it, and it's a great thing.
I wouldnt change anything because the mistakes and the hurt are as important as all the great fights. They made me who I am today.
I think I've become one of the best finishers in boxing; if I hurt a guy, I normally take him out.
Before I fight, I always pray that no one gets hurt.