Who are the most disciplined fighters in the sport?

Just because everyone wants to talk about how Mannys distractions contributed to his decline, lets review who are the most disciplined fighters that prolonged their prime and elite status trough a very disciplined lifestyle inside and outside of the ring.

Here are some that come into mind

Hopkins- No champagne, No new years eve, same diet when not in training, if his steak was marinated with red wine, hed go to the kitchen to ask the chef not to put a drop of alcohol in his meat.

Hagler- goes into isolation to be prepared mentally and physically when in training. If 24/7 was created in his time, I bet hed tell HBO to fudge off. Even called his training camp "jail".

Marquez- Obviously he dreamt slept and ate Pacquiao. He chased him across divisions and press conferences. Im amazed how he was able to gain more muscle at his age and at this stage of his career.

Anyway name some