Your habits are under your power of choice, but once you make the choice, you become the servant to the choice. The great baseball pitcher Nolan Ryan pitched seven no-hitters. In an edited video of his pitches, showing one after another successively, it looks like a continuous replay of the same pitch. He became great because he never deviated from the habits he learned in practice. The same concentration is needed to achieve greatness anywhere. A man can know and understand something and even do it successfully once or twice, but the ability to accomplish the same thing routinely is where true success is found. The greatest of men discipline themselves to practice success-breeding habits.