This is one key which if used with the right earnest shall ensure that you shall become one of the Self-Made Millionaires. Napoleon Hill calls this the “Master Key to Riches”.
After studying 500 of the richest people in America he had said it is the quality of self-discipline, it is the ability to make yourself do what you should do when you should do, whether you like it or not is the key to riches.
What exactly is self-discipline? It is the ability to control your impulses, emotions, reactions and behaviors; it allows you to forego short-term gratification in favor of long-term satisfaction and gain. It is saying “no” when you really want to say “yes.” It is not about leading a restrictive and boring life void of enjoyment. In fact, it is next to impossible to be self-disciplined in all areas of your life. Rather than attempting to be disciplined in all you do, use it to focus on what is most important.
This self-discipline will make you a big success. It is the ability to force yourself to do what you know you should do. Here is the wonderful discovery: It is persistence is self-discipline in action. Every time you persist, you build your self-discipline. Every time you practice self-discipline, you build your ability to persist and the two of them are tied to your self-esteem. So the more you persist, the more you like yourself, and the more you like yourself and the more discipline you have, the more you persist.
Eventually you get onto an upward spiral where you become absolutely unstoppable. You reach the point where you know you can achieve the goal and nothing in the world can stop you and every step that you take forward makes you stronger and stronger. Finally people say, I know about him, I know about her, you just cannot stop him or her. Once they decide they want something, they will not stop until they get it. And when you develop that quality there will be nothing that is impossible to you.