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 CarnegieIf you can't sleep, then get up and do something instead of lying there worrying. It's the worry that gets you, not the lack of sleep.
Dale CarnegieLet us praise even the slightest improvement. That inspires the other person to keep on improving.
Dale Carnegie