I had help w all my epiphanies, all from people who are currently active here on this forum or were active in the last year...
1. If villain folds, my hand doesn't matter, so what are my chances of stealing this pot/what are the chances that if I bet here, he'll fold?
2. Fold equity = steal equity
3. Being too tight means nobody who's serious about poker and paying attention to my style of play (i.e., using a HUD) will pay me off.
4. Since I look like a nitty TAG to anyone using a HUD, I can blow them off their hands once in a while by being aggressive.
5. Categorizing villain types allows me to exploit specific things about regs.
6. Play the player, not my cards.
7. Pot odds
shouldn't dictate my decisions by themselves, need to look at fold equity and implied odds as well.
8. I'm not the only one who doesn't hit the flop.