Rob Willson and Rhena Branch are CBT therapists who work in private practice in north London. They have both taught and supervised the MSc CBT course at Goldsmiths, having previously worked at The Priory Hospital in London. They are the co-authors of Cognitive Behavioural Therapy For Dummies, Cognitive Behavioural Therapy Workbook For Dummies and Boosting Self-Esteem For Dummies.