That was always the difference between Muhammad Ali and the rest of us. He came, he saw, and if he didn't entirely conquer -- he came as close as anybody we are likely to see in the lifetime of this doomed generation.
I have always adhered to two principles. The first one is to train hard and get in the best possible physical condition. The second is to forget all about the other fellow until you face him in the ring and the bell sounds for the fight.