i can't believe i'm going to put this one up, but i read an article with will smith recently about his workout regime for Legend.
He said (and i might be slightly paraphrasing):
"If you say you're going to run 3 miles, but only run 2 - I'll never have to worry about you beating me."
It speaks volumes about motivation and standing behind your word (which is kind of a lost art these days).
Cheers,
Keebler