The one human quality that must be developed is self discipline for success. The will power to force yourself to do what you know you should do when you should do it, whether you like it or not, whether you feel like it or not. Success is tons of discipline.
Brian TracyDecide exactly what you want and resolve to persist, no matter what, until you achieve it.
Brian TracyYou cannot control all of what happens to you, but you can control your attitude toward all of what happens to you...You can choose to be happy and grateful rather than disappointed and bitter, by focusing on how it could have turned out worse but didn't, rather than how it could have turned out better but didn't.
Brian Tracy