Don't take life so seriously, you're not getting out alive. It is best to act with confidence, no matter how little right you have to it. If you think you can, you can. And if you think you can't, you're right. Luck is the by-product of busting your fanny.
Discovery consists of seeing what everybody has seen and thinking what nobody has thought.
When people show you who they are, believe them. Be not afraid of growing slowly, be afraid only of standing still. Dwelling on the negative simply contributes to its power. To change and to improve are two different things. Laugh at yourself first, before anyone else can.