Pain is the purifier. Love pain. Embrace pain.
To be great, one does not have to be mad, but definitely it helps.
Runners don't run with their legs, they run ON their legs. In reality, they run with their Arms!
If you die, I will bury you in the sandhills with all the other runners.
Hard things take time to do. Impossible things take a little longer.
Ignore, then, whether you are tall and thin or short and stocky- whether they laughed at you at home (where they are often unkind) or at school (where they are mostly blind, anyway). Indeed-to hell with the lot of them if you 'feel' you can do it.