Enthusiasm is the dynamics of your personality. Without it, whatever abilities you may possess lie dormant; and it is safe to say that nearly every man has more latent power than he ever learns to use. You may have knowledge, sound judgment, good reasoning faculties; but no one-not even yourself-will know it until you discover how to put your heart into thought and action.
Dale CarnegieThere are four ways, and only four ways, in which we have contact with the world. We are evaluated and classified by these four contacts: what we do, how we look, what we say, and how we say it.
Dale CarnegieDevelop success from failures. Discouragement and failure are two of the surest stepping stones to success. The successful man will profit from his mistakes and try again in a different way. When you're afraid, keep your mind on what you have to do...if you have been thoroughly prepared, you will not be afraid. We all have possibilities we don't know about. We can do things we don't even dream we can do.
Dale Carnegie