Hard things take time to do. Impossible things take a little longer.
If it hurts, make it hurt more.
If you die, I will bury you in the sandhills with all the other runners.
Thus I urge you to go onto your greatness if you believe it is in you. Think deeply and separate what you wish from what you are prepared to do.
I'm not interested in athletics, I'm only interested in achievement. Fix your goal and work for it.
Run hard, be strong, think big!