Worry is simply an unhealthy and destructive mental habit.

A peaceful mind generates power.

Any fact facing us is not as important as our attitude toward it, for that determines our success or failure. The way you think about a fact may defeat you before you ever do anything about it. You are overcome by the fact because you think you are.

It's always too early to quit.

The controlled person is a powerful person. He who always keeps his head will get ahead.

Shoot for the moon. Even if you miss, you'll land among the stars.