I just wanted to post this picture which I think sums up trying to come up in stand-up comedy. One day you're in front of 100 people, the next day 5. One day you're getting paid a couple hundred bucks, the next day a free beer. One day someone comes up to you after a show to tell you how funny you are, the next the bartender is telling you to buy something or leave and it doesn't matter if you're a comic on the show.
In a lot of ways this dichotomy is a good thing. It keeps you fresh. When you start to get a big head there's a good chance the stand-up gods will be knocking you down a peg shortly. I love it, because it doesn't matter if there's 500 people or 5, make 'em laugh.