1 Corinthians 9:24-27 - The Need For Self-Discipline
24 Do you not know that in a race the runners all compete, but only one wins the prize? That is the way you must run, so as to win. 25 Any man who enters an athletic contest goes into strict training, to win a wreath that will soon wither, but the one we compete for will never wither. 26 So that is the way I run, unswervingly. That is the way I fight, not punching the air. 27 But I beat and bruise my body and make it my slave, so that after I have called others to the contest I may not be disqualified myself.