Dr. Susie Orbach - the therapist who treated Diana, Princess of Wales, for her eating disorders; the founder of the Women's Therapy Center of London; a former columnist for The Guardian; a visiting professor at the London School of Economics; and the author of 1978 best-seller Fat is a Feminist Issue - is, aside from Sigmund Freud, probably the most famous psychotherapist to have ever set up couch in Britain.