I've never viewed myself as particularly talented. I've viewed myself as…slightly above average in talent. Where I excel is with a ridiculous, sickening work ethic. While the other guy's sleeping, I'm working. While the other guy's eating, I'm working. While the other guy's making love, I mean, I'm making love, too, but I'm working really hard at it!
That's from Will Smith in an old 60 Minutes interview.
I once heard Jay Leno say something similar. Leno apparently hasn't taken a vacation in more than 20 years and he says whenever he sees Letterman ("the other guy," to use Smith's phrasing) on vacation, he keeps on working.
Smith and Leno see their work ethic as relative to their competitors.