Intended as a supplementary book for use in theory of psychotherapy/counselling courses, this book presents the main ideas and approaches of two major, modern theories of the person: object relations and the psychology of the self. The author provides an overview of such writers as W.R.D. Fairbairn, D.W. Winnicott, Otto Kernberg, Melanie Klein, Margaret S. Mahler, and Heinz Kohut, and illustrates their work with case studies, as well as summarizing, comparing and contrasting their work.