Edward M. Hallowell said this quote

So don't look over your shoulder or let fear and anxiety rule you. Go for broke. Let passion blaze your trail. Look ahead and pursue the dream that fits who you are as a person and a manager. Learn what you can, but don't get bogged down--in today's world, there's so much to know that learning can actually take the place of action and hold you back. Learn enough, then trust your gut and act. Be bold--or crazy--enough not to hold back. Take advantage of the freedom to be your own person. When the game is over, regardless of the score, you'll revel in what you've done.