Ralph W. Emmerson

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; 

begin it well and serenely and

 with too high a spirit to be cumbered with your old nonsense.
This day is all that is good and fair.
It is too dear, with it's hopes and invitations,
to waste a moment on the yesterdays.

Ralph Waldo Emmerson