There’s a couple of quotes on refrigerator magnets at home attributed to Ralph Waldo Emerson that directly relate to the biz of you:

Finish each day and be done with it.  You have done what you could.  Some blunders and absurdities have crept in;  forget them as soon as you can. Tomorrow is a new day. You shall begin it serenely and with too high a spirit to be encumbered with your old nonsense.  

The only person you are destined to become is the person you decide to be.

Just like a profit based business mistakes and failures are just part of the game.  The key to successful businesses is to learn from the mistakes or blunders and move on to the next thing.  In the same way, it is up to us to learn and move on.  This moving on is a decision that allows us to make the future what we want it to be.  If this isn’t managing the biz of you, I don’t know what is.