1 Corinthians 9:24-27

24 Do you not know that in a race all the runners run, but only one gets the prize? Run in such a way as to get the prize. 25 Everyone who competes in the games goes into strict training. They do it to get a crown that will not last; but we do it to get a crown that will last for ever. 26 Therefore I do not run like someone running aimlessly; I do not fight like a boxer beating the air. 27 No, I strike a blow to my body and make it my slave so that after I have preached to others, I myself will not be disqualified for the prize.

Mark Cavendish, the famous Manx sprinter, once said something along the lines of if you come second in a stage you may as well be last. It is this all or nothing attitude that has propelled him to winning more stages of Le Tour than anyone else. Reflecting on the Isthmian Games held in Corinth, Paul says something similar of the discipline and focus of the athletes competing there and calls us to give everything in our service of Christ – and like them, what a prize awaits us!
Be thou my vision, O Lord of my heart,
Be all else but naught to me, save that thou art;
Thou my best thought in the day and the night,
Both waking and sleeping, thy presence my light.