The secret of joy in work is contained in one word excellence. To know how to do something well is to enjoy it.

Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress.

Alfred A. Montapert

Accept the things to which fate binds you, and love the people with whom fate brings you together, but do so with all your heart.

Marcus Aurelius

All action results from thought, so it is thoughts that matter.

Sai Baba

If you do what you've always done, you'll get what you've always gotten.

Tony Robbins

Those that know, do. Those that understand, teach.

Aristotle

No is easier to do. Yes is easier to say.

Jason Fried