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. You shall begin it serenely and with too high a spirit to be encumbered with your old nonsense. ―Ralph Waldo Emerson

But strive first for the kingdom of God and his righteousness, and all these things will be given to you as well. So do not worry about tomorrow, for tomorrow will bring worries of its own. Today’s trouble is enough for today. ―Matthew 6:33-34

Tomorrow, and tomorrow, and tomorrow,
Creeps in this petty pace from day to day
To the last syllable of recorded time,
And all our yesterdays have lighted fools
The way to dusty death. Out, out, brief candle!
Life’s but a walking shadow, a poor player
That struts and frets his hour upon the stage
And then is heard no more: it is a tale
Told by an idiot, full of sound and fury,
Signifying nothing.
―William Shakespeare, Macbeth, Act 5 Scene 5

It’s hard to stay up
It’s been a long, long day
And you got the sandman at your door
But hang on, leave the TV on
And let’s do it anyway
It’s okay, you can always sleep through work tomorrow, okay?
Hey, hey, tomorrow’s just your future yesterday.
―Theme song to the Late, Late Show with Craig Ferguson