The foundation of confidence in virtually every field is preparation.

All great success is preceded by failure.

Throughout my career, I have discovered and rediscovered a simple truth.It is this: the ability to concentrate single-mindedly on your most important task, to do it well and to finish it completely, is the key to great success, achievement, respect, status and happiness in life.

The more people you contact, the higher your sales will be because of the law of probabilities.

Persisting through lesser difficulties builds your capacity to persist through greater difficulties, and achieve even greater things.

Superior leaders are willing to admit a mistake and cut their losses. Be willing to admit that you've changed your mind. Don't persist when the original decision turns out to be a poor one.

The simple act of writing down a goal and making a written plan for its accomplishment moves you to the top 3 percent.