Below are some quotes that I like and often come back to.
"You miss 100% of the shots you don't take." - Wayne Gretzky
"Darwin wins inside these walls. Not Einstein. Darwin." - C-Note from Prison Break
"Intelligence is the ability to adapt to change." - Stephen Hawking
"A little bit of slope makes up for a lot of y-intercept." - John Ousterhout
"Either you run the day or the day runs you." - Jim Rohn