Finish every day and be done with it

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 fast as you can. Tomorrow is a new day. You shall begin it well and serenely, and with too high a spirit to be cumbered with your old nonsense.

— Ralph Waldo Emerson, 8 Apr 1854

From the letter To Daughter Ellen