Optimism is the one quality more associated with success and happiness than any other. - Brian Tracy

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.

Perhaps the most important insight of all with regard to success is that to achieve greatly, you must become a different person. It is not the material things you accomplish or acquire that matter so much as it is the quality of the person you must become to accomplish well above the average. The development of self-discipline is the high road that makes everything possible for you.

The act of taking the first step is what separates the winners from the losers.