Know the true value of time; snatch, seize, and enjoy every moment of it. No idleness, no delay, no procrastination; never put off till tomorrow what you can do today.
Earl of Chesterfield
Finish each day and be done with it. You have done what you could; some blunders and absurdities have 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
Consult not your fears but your hopes and your dreams. Think not about your frustrations, but about your unfulfilled potential. Concern yourself not with what you tried and failed in, but with what it is still possible for you to do.
Pope John XXIII
Look at a day when you are supremely satisfied at the end. It's not a day when you lounge around doing nothing, it's when you've had everything to do and you've done it.
You must be the change you wish to see in the world.
The future belongs to those who believe in the beauty of their dreams.