A potentially results-oriented comment, but nothing bums me more than betting my set and getting 2-3 folds. I'm more likely to bet draws with a couple players when I'm OOP, than I do c/c or c/r sets. Takeing control of the hand seems to pay dividends more often than not.

Sometimes I'll c/c flop with a draw, and raise the turn, and get tons of folds HU. When I get called, and hit my card on the river, I can quite often get paid on my value bet.