Eat only when you are hungry. Drink only when you're thirsty. Sleep only when you're tired. Screw only when you're horny.
Don't just learn something from every experience, learn something positive.
Everyone should fail in a big way at least once before reaching forty.
I quit being afraid when my first venture failed and the sky didn't fall down.
Be as nice as possible and as nasty as necessary.
The difference between a mountain and a molehill is your perspective.