Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment.

Peace of mind is not the absence of conflict from life, but the ability to cope with it.

Face your deficiencies and acknowledge them; but do not let them master you. Let them teach you patience, sweetness, insight.

Change is the law of life. And those who look only to the past or present are certain to miss the future.

You have power over your mind ? not outside events. Realize this, and you will find strength.

Let me tell you the secret that has led me to my goal: my strength lies solely in my tenacity.

We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.

He that respects himself is safe from others; he wears a coat of mail that none can pierce.

I cannot always control what goes on outside. But I can always control what goes on inside.

The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.