for reading and providing detailed feedback on the draft manuscript, and Gillian for her friendship and the many long conversations that we have had in the past three years, and that have contributed greatly to the finished manuscript.My friends and colleagues on the Oxford Doctoral Course in Clinical Psychology at the Isis Education Centre in Oxford also helped enormously, in many ways, throughout the writing of this book. I suspect they are unaware of just how helpful they have been.And, as always, I had exceptionally generous amounts of help from Freddie, Humphrey, Oliver, and Bertha.