Don't shoot for something unattainable - completely outside of your nature or opportunity.

I always wanted to be a sprinter.

It is important that you strive for humility, but not humiliation, for a cool, level-headed confidence, not a stiff, delusional arrogance.

The basis of self-discipline: Don't allow the edges to blur.

All my life I believed I became an athlete through my own determination, but it's impossible to think that being descended from slaves hasn't left an imprint through the generations.

Don't shoot for something unattainable - completely outside of your nature or opportunity.

Examine the opportunities, the challenges you've given yourself.