One thing to remember is that you usually have enough to bet as much as a full stack would preflop and on the flop. 75% of the time, that's enough. A big part of the other 25%, you want them to call for all your stack on the turn/river because you have the best hand.

If you bluff and it gets called, drop it unless you have a good reason to believe they'll let it go to another bet. This is the one place where it would be nice to have a bigger stack; you can't always even bet someone off of bottom pair.