Discipline is one of your most powerful tools. Use it to your advantage. Discipline is nothing more than controlling your own behavior. And you've been doing that your whole life. You have the power to make your own choices and to follow those choices. So make those choices the ones that will raise your life to greater and greater heights. Every day you have the opportunity to grow stronger. Every moment you have the opportunity to make solid progress. Use the discipline that is yours to seize those opportunities. Exercise the sweet control over your own actions that will bring great fulfillment to your days. In discipline is enormous power to which you already have access. Choose to use it, again and again, and there is no limit to the rewards it will bring.
-- Ralph Marston