Don't just learn something from every experience, learn something positive.
I quit being afraid when my first venture failed and the sky didn't fall down.
Eat only when you are hungry. Drink only when you're thirsty. Sleep only when you're tired. Screw only when you're horny.
Never hesitate to steal a good idea.
Be as nice as possible and as nasty as necessary.
When big-time blunders occur in any workplace, the boss or bosses usually are at fault, not clerks or secretaries or salespeople. Not reporters, the buck stops with the boss.