I would rather fail trying than succeed at doing nothing.
You must continue to gain expertise, but avoid thinking like an expert.
The greatest communication skill is paying value to others.
Losers live in the past. Winners learn from the past and enjoy working in the present toward the future.
Be a role model not a critic. Don't tell your children, your peers, or your subordinates what to do - show them. And when the lesson is over, keep showing them by demonstrating that your actions are part of your character, not part of their curriculum.
Losers take chances; winners make choices.