A successful individual typically sets his next goal somewhat but not too much above his last achievement. In this way he steadily raises his level of aspiration. - Kurt Lewin
The big secret in life is that there is no big secret. Whatever your goal, you can get there if you're willing to work. - Oprah Winfrey
Strive for excellence, not perfection. - H. Jackson Brown Jr.
Don't aim at success - the more you aim at it and make it a target, the more you are going to miss it. For success, like happiness, cannot be pursued; it must ensue... as the unintended side-effect of one's personal dedication to a course greater than oneself. - Viktor Frankl
