“You control your own mind; you have the power to feed it whatever thought-impulses you choose. With this goes the responsibility of using it constructively. You are the master of your own earthly destiny just as surely as you have the power to control your own thoughts. You may influence, direct, and eventually control your own environment, making your life what you want it to be. Or, you may neglect to make your life what you want, and you will be adrift on the seas of “circumstance” where you will be tossed like a chip on the waves of the ocean.”

Napoleon Hill, from Think and Grow Rich