I haven't bookmarked any quotes at the moment.
Finish each 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 encumbered with your old nonsense.
But wait... my book has more:
Progress is impossible without change, and those who cannot change their minds cannot change anything.
Women wish to be loved not because they are pretty, or good, or well bred, or graceful, or intelligent, but because they are themselves.
Bad people are less a problem than indifferent people.
Look at things... as they can be.