Sometimes you have to give up. Sometimes knowing when to give up, when to try something else, is genius. Giving up doesn't mean stopping. Don't ever … - Phil Knight

One ounce sliced off a pair of shoes, he said, is equivalent to 55 pounds over one mile. He wasn’t kidding. His math was solid. You take the average man’s stride of six feet, spread it out over a mile (5,280 feet), you get 880 steps. Remove one ounce from each step — that’s 55 pounds on the button. Lightness, Bowerman believed, directly translated to less burden, which meant more energy, which meant more speed. And speed equaled winning. Bowerman didn’t like to lose. (I got it from him.) Thus lightness was his constant goal.

The cowards never started and the weak died along the way — that leaves us.

Beating the competition is relatively easy. Beating yourself is a never-ending commitment.