10 Rules for Behavior (Thomas Jefferson)

1. Never put off till tomorrow what you can do today
2. Never trouble another for what you can do yourself
3. Never spend your money before you have it
4. Never buy what you do not want because it is cheap; it will not be dear to you
5. Pride costs us more than hunger, thirst, and cold
6. We never repent of having eaten too little
7. Nothing is troublesome that we do willingly
8. How much pain have cost us the evils which have never happened
9. Take things always by the smooth handle
10. When angry, count ten before you speak; if very angry, a hundred

source here.