Be clear about your goal but be flexible about the process of achieving it.

The value of a promise is the cost to you of keeping your word.

Throughout the developed world,we have moved from "man power"to "mind power."We have moved from the use of physical muscle to the use of mental muscle.

Your mind is like a garden - unless you cultivate flowers, weeds will flourish. To keep your mind positive, substitute positive thoughts for negative thoughts.

The first quality of courage is the willingness to launch with no guarantees. The second quality of courage is the ability to endure when there is no success in sight.

The definition of flexibility is being constantly open to the fact that you might be on the wrong track.

Your determination to become a more optimistic person in every part of your life will do more to ensure your success and happiness than any other single quality you can develop.