“Disciplining yourself to do what you know is right and importance, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.”

“The more you discipline yourself to use your time well, the happier you will feel and the better will be the quality of your life in every area.”

“The ability to discipline yourself to delay gratification in the short term in order to enjoy greater rewards in the long term, is the indispensable prerequisite for success.”

“The starting point of great success in your life begins, in the simplest terms, when you discipline yourself to think and talk about only the things you want and refuse to think and talk about anything you don't want.”

“If you wish to achieve worthwhile things in your personal and career life, you must become a worthwhile person in your own self-development.”

“You are where you are and what you are because of yourself, nothing else. Nature is neutral. Nature doesn't care. If you do what other successful people do, you will enjoy the same results and rewards that they do. And if you don't, you won't.”

“Invest three percent of your income in yourself (self-development) in order to guarantee your future.”