This is something I've worked on intellectually for many years. When I was younger, I could tell you lots of these from memory. I think there were more. Obviously, they didn't all stick by the time I decided to write them down. Dated 28 October 2008.
1. The Golden Rule: Treat others the way you want to be treated.
2. The Ketchup Rule: Even if a little is good, more may not necessarily be better, no matter how tempting it may seem. (May also be called the Peanut Butter Rule.)
3. The Iceberg Rule: If you see a bit of something, chances are good there may be a lot more to it than you can tell. Akin to the phrase 'where there's smoke there's fire.'
4. The No-Fault Rule: Don't use other people's mistakes to excuse or justify your own.
5. The Control Rule: You're the only (adult) person you can control. Period. End of story. Any efforts or expectations otherwise will only lead to disappointment. The basic premise behind this rule is RESPECT. The corollary of this is don't expect or allow anyone else to control you. Respect yourself and others enough to take care of your own business and keep it at home, without interfering with others' lives and/or their (in)ability to do the same.
6. The Reciprocation Rule: Don't expect someone else to do a thing for you just because you'd do it for them. This does not override the Golden Rule (#1) because of the Control Rule (#5).