Golly, my beliefs. I hesitate to get too deep (I don't think I'm a very deep person), so I guess I will mention some rules I try to live by. They are not in any particular order.
1. Don't be ashamed of what you like. I made the decision to be open about my low-brow taste in entertainment a few years ago. It is harder than it seems, at least for me! I try to be honest about liking reality TV - I love The Bachelor and Survivor, and I used to watch marathons of The Real World. I even watched the whole DC season on the internet, even though it is definitely the worst season I ever tried. With books, it is more difficult. I have no problem admitting that I like science fiction/fantasy. I have a much more difficult time admitting that I like reading romance novels. But I am trying hard to get over any feelings of embarrassment - not embarrassment at reading them, but embarrassment at admitting to people who think I'm intelligent that I like reading them.
2. Don't take yourself too seriously. I developed this rule when I studied abroad in Spain. At first I was so embarrassed by my Spanish language skills that I would barely talk. But that means that I couldn't really meet anyone, or go out to dinner, or buy anything. And I also realized that even if I totally screwed up, no one knew me! No one cared but me! I now apply this maxim to almost any interaction I have. Buying a bra? No one cares what size it is! Eating French fries? No one is looking at my plate but me! And even if someone does care about those things, it doesn't affect me at all.
3. a. Always be polite in written communication. Saying "Dear" and "Sincerely" go a long, long way. I always get better results when I apply this rule.
3. b. Don't be afraid to stick up for yourself on the phone. If you're getting a raw deal, complain about it! You can always be polite in your follow-up "thank you" e-mail.
4. Keep in touch with your friends. This one has been learned by tough experience. Don't be proud; if they don't respond, still keep in touch. You never know what is going on in their lives.
OK, I think those are my main rules for living. At least, I think they are good rules to have.