I came across Eric Zorn's "50 things I've learned in 50 years, a partial list in no particular order" through The Happiness Project . It's great, you should read it.
My favorites are:
1. It’s better to sing off key than not to sing at all.
3. You can’t avoid offending people from time to time. When you don’t mean it, apologize. When you do mean it, accept the consequences.
6. The most valuable thing to have is a good reputation, and it’s neither hard nor expensive to acquire one: Be fair. Be honest. Be trustworthy. Be generous. Respect others.
7. Prejudice and bigotry is hard-wired into us. You can’t overcome it until you acknowledge it.
17. Don’t waste your breath proclaiming what’s really important to you. How you spend your time says it all.
22. Anyone who judges you by the kind of car you drive or shoes you wear isn’t someone worth impressing.
31. Physical attraction is nice, but shared values and a shared sense of humor are the real keys to lasting love.
46. Be truthful or be quiet. Lies are hard to keep track of.
Number 21 hit me like a ton of bricks.
21. Fear of failure is a ticket to mediocrity. If you’re not failing from time to time, you’re not pushing yourself. And if you’re not pushing yourself, you’re coasting.