The predominant quality of successful people is optimism.... Your level of optimism is the very best predictor of how happy, healthy, wealthy, and long-lived you will be.
Brian TracyFailure is an indispensable prerequisite of success. It is how you learn the lessons you need.
Brian TracyResolve to pay any price or make any sacrifice to get into the top ten percent of your field. That payoff is incredible!
Brian Tracy