"Acting is really about having the courage to fail in front of people."-- Adam Driver

Acting is about finding the truth of the part you play and capturing it so well that the audience understands your character fully.
Living is about finding the truth within yourself and having the courage to live that so clearly that everyone understands YOU fully.
Because there is always a danger that you will fail in your attempts to bring meaning and excitement to your character--if you're an actor--or your life--if you're you, courage is required; that and a new idea of what "failing" really is.
If you don't try anything new, you will never fail. If you don't try anything new, you will soon feel like you're not living a rich, full life.
Fail spectacularly.  Fail beautifully.  Fail, fail, fail, for each failure carries within it the seeds of your next, wonderful triumphs.