“Discipline is the foundation on which all success is built. Lack of discipline inevitably leads to failure. Discipline is the master key. It unlocks the door to wealth and happiness, culture and sophistication, high self-esteem and high accomplishment, and the accompanying feelings of pride, satisfaction, and success. Even the smallest discipline can have an incredible effect on your attitude.”

- From 7 Strategies for Wealth and Happiness by Jim Rohn