Don't compare your life to others. You have no idea what their journey is all about.
Don't have negative thoughts of things you cannot control. Instead invest your energy in the positive present moment.
Don't overdo. Keep your limits.
Don't take yourself so seriously. No one else does.
Don't waste your precious energy on gossip.
Dream more while you are awake.
Envy is a waste of time. You already have all you need.
Forget issues of the past. Don't remind others of their past mistakes.
Life is too short to waste time hating anyone.
Make peace with your past so it won't spoil the present.
No one is in charge of your happiness except you.
Realize that life is a school and you are here to learn. Problems are simply part of the curriculum that appear and fade away but the lessons you learn will last a lifetime.
Learn a new word every day.
Smile and laugh more.
You don't have to win every argument