Be selfish. Grow strong in self confidence and self knowledge and self-esteem.
Love does not conquer all; you need more than love to be content, happy and to survive.
Respect is earned; it is not an entitlement.
Pay it forward without expectation of getting anything in return.
Hone your skills for dealing with *ssholes because they're everywhere.
You have to be a true friend to have a true friend and know some people aren't capable of being a true friend no matter what you do. Which brings me to the next wise thought.
When someone shows you who they are believe them the first time. It will save you a lot of aggravation and energy and time.
Lost time is never found again. Time is our most precious commodity.
Nobody can make you feel inferior without your permission.
Laugh as often as you can. Don't take life too seriously. Don't take yourself too seriously.