Finish every day and be done with it. You have done what you could; some blunders and absurdities no doubt 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.
Ralph Waldo Emerson
Sufficient unto the day is the trouble thereof. Matthew 6:34
Abba Poemen said about Abba Pior that every single day he made a fresh beginning.
Abba Poemen Egyptian monk (c. 340–450)