Your nervous system can't tell real failure from imagined failure.

Mental pictures offer us an opportunity to practice new traits and attitudes, which otherwise we could not do. This is possible because again - your nervous system cannot tell the difference between an actual experience and one that is vividly imagined.

Self-discipline is the golden key; without it, you cannot be happy.

It is well known that when Thomas A. Eddison was stymied by a problem, he would lie down and take a short nap.

Your automatic guidance system cannot guide you when you're stalled, “standing still”.

Functionally, a man is somewhat like a bicycle. A bicycle maintains its poise and equilibrium only so long as it's moving forward towards something.

See yourself reacting to threats, not by running away or evading them, but by meeting them, dealing with them, grappling with them in an aggressive intelligent manner.