“Because each of us carries around inside ourselves a mental picture of the kind of person we are. “I’m an efficient secretary,” we may say. Or, “I’m an outdoorsman who loves to hunt.” Or, “I’m a hometown boy not interested in travel far from home.” This self-concept is at the heart of our opinion of ourselves – how much we like ourselves, how much confidence we feel, etc. – and we live our lives in large measure to be in consonance with this self-concept, and to enhance it. Our self-concept is our most precious mental and emotional possession.”