A few people have already said it, but I'll repeat.
1. Don't take rejection too seriously. People will reject others because the color of their hair is wrong.
2. To not research what you're doing. I think I read until my eyeballs were dry. I asked questions until my fingers hurt from typing. It helped me establish guidelines and helped me communicate with Mr. LFM on a much more equal basis. Little did I know that he'd been researching much longer than I had.
3. To not talk about things with your swing partner. Big mistake. Not talking to your partner will lead you down a road of hell.