the bolded one is my personal favorite (it applies the most to my life)

• be slow to frown, and fast to smile
• know the difference between money and wealth
• make peace with the past
• take time out for yourself
• ask not of others what you wouldn't do yourself
• keep your friends' secrets
• know what you will and won't do
• live within your means
• enjoy the journey as much as the destination
• don't wait for everything to be perfect
• satisfy need, not greed
• hear everyone out, but listen to a chosen few
• work on happiness
• look for the best in people
• don't let your tongue get ahead of your mind
• make things happen, don't wait for things to happen
• accept yourself
• widen your horizons
• think with your head, act with your heart
• help others succeed, and you will too
• take responsibility for your actions
• live and let live
• pursue your passion
• break the routine
• be at the door when opportunity knocks
• make every second count
• take charge of your own destiny

thanks! [http://thingsweforget.blogspot.com]