Perhaps the greatest display of self-discipline is persisting when the going gets tough. Persistence is self-discipline in action.

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.

Almost all unhappiness in life comes from the tendency to blame someone else.

Good habits are hard to develop but easy to live with; bad habits are easy to develop but hard to live with. The habits you have and the habits that have you will determine almost everything you achieve or fail to achieve.

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

Self-acceptance begins in infancy, with the influence of your parents and siblings and other important people.

Life is like a combination lock; your job is to find the right numbers, in the right order, so you can have everything you want.