One important key to success is self-confidence. An important key to self-confidence is preparation.
Arthur AsheIf you don’t want to get stuck where you don’t want to be, have the courage to do difficult things.
Think Confident, Be Confident for Teens: A Cognitive Therapy Guide to Overcoming Self-Doubt and Creating Unshakable Self-EsteemA primary requirement in every enterprise in habit-formation is self-confidence.
The Art of Self-Control