An interesting read here, found on Wil Wheaton’s site. A few that stand out to me:

2. Let go of your need to make all the choices all of the time. Other people have better ones sometimes.

10. Love what you love. Don’t trick yourself or others.

11. Cut out people that bum you out.

14. Ignore social constraints if more convenient or sensible than abiding by them.

15. Learn to play D&D.  If you’re already laughing this one off, learn it immediately. (This one really cracks me up, I know how to play D&D, I did it all through junior and senior high school)

16. Feel free to simply let parts of your past go.

17. Get rid of the stuff you’re hoarding. It’s an emotional drain. (Moving really helps)

21. Whoever makes you happy most of the time, that’s "the one."

From the comments section, an addition:

8. Don’t ever begrudge anyone their personal success, because their success may come in handy to you someday. (A good one that my wife and I have talked about. I would add ‘Be happy for their success’)

I also enjoyed his ‘I am a Macaholic’ blog. Read it here.