PAUL GILBERT is professor of clinical psychology at the University of Derby and, until his retirement from the NHS in 2016, was consultant clinical psychologist at the Derbyshire Health Care Foundation Trust. He has researched evolutionary approaches to psychopathology for over 40 years with a special focus on the roles of mood, shame and self-criticism in various mental health difficulties for which compassion focused therapy was developed. He has written and edited many books on psychology, therapy, and compassion. He was awarded an OBE by the Queen in March 2011 for services to mental health.