I think everyone should have a few quotes that remind them of how they want to live their life.  Here are mine:

THE CRITIC – “It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.”   Theodore Roosevelt.

“As a man thinks, he is.  As a man continues to think, he remains.”   James Allen

“Failure isn’t falling down, it’s staying down.”  Unknown

“If you think you can do a thing or think you can’t do a thing, you’re right.”  Henry Ford. 

“What’s worth the prize is always worth the fight”.  Nikelback

“Once in knew better, I did better.”  Oprah Winfrey

“When I do right, things tend to go right, when I do wrong, things tend to go wrong.”  Paul Phillips

“Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men of talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent.” Calvin Coolidge