Some of the best advice I’ve gotten from my family, usually from my mother or grandfather:
Don’t believe anything you hear, and only half of what you see.
Don’t run from trouble. It will always show up right where you land.
What comes around, goes around. So treat it like you would want to be treated. (This usually had to do with juicy gossip.)
When you’re faced with a hard choice, make a decision, don’t look back, and let the hairy side drag.
Admit when you are wrong, and move on.
Never be afraid to apologize.
Always tell people you love them. Always tell people what you like about them.
If you want to keep something a secret, don’t tell anyone. You tell one person, and you may as well expect that everyone knows.
Never say something behind someone’s back that you wouldn’t say to their face. Actually, say it to their face first.
If it’s your mistake, own it.
Always give things back in better condition than you borrowed them.
Listen to your mother.
Stand up for what you believe, even if it isn’t popular.
Count the cost before you act, then you are prepared for any consequence.
It’s okay to give money to family or friends, but don’t loan it.
Never get involved in a land war with Asia 😉
The Outside Lane 
And never go in against a Sicilian when death is on the line.