Do you know any quotes that could go on a motivational poster?

Question

you know, like these ones:

http://www.amazon.com/Health-Happiness-Motivational-Inspirational-Poster/dp/B000VRK3CM

http://thefuntimesguide.com/images/blogs/lexmom95-hanging-in-there-poster.jpg

http://tesl-ej.org/ej41/intpix/630932941_691a4d0cdc.jpg

i need to make a motivational poster for my photography class

Answer 1

"Pain is temporary, quitting lasts forever."-Lance Armstrong

Answer 2

if it is to be it is up to me

Answer 3

Just one more step.