Jon Stewart is exactly the same guy he's always been, only with money. He knows that the moment he really believes he's important, the funny goes away and he becomes Bill O'Reilly, except shorter and Jewish.
My success has been something I've worked a long time at and it's been a gradual process. I compare it to the idea of someone losing a lot of weight over a period of a few years. You don't really notice the weight loss overall but if you compare photos from then and now there's a big difference.