The greatest discovery of any generation is that a human being can alter his life by altering his attitude.
Most people give up just when they're about to achieve success. They quit on the one yard line. They give up at the last minute.
The measure of success is not whether you have a tough problem to deal with, but whether it is the same problem you had last year
The greatest part of our happiness depends on our dispositions, not our circumstances.
When you're committed to something, you accept no excuses, only results.