Steffen Oelsner has worked, after his apprenticeship as a toolmaker in East Berlin, in this profession for several years before studying psychology and obtaining his Ph.D.. He was a research assistant at Freie Universität Berlin and at Humboldt-Universität zu Berlin. Oelsner is a trained behavioural therapist and has been a psychotherapist and trainer for behavioural therapy for more than 25 years. He supervises a teaching practice and also has more than twenty years of experience as a lecturer, self-experience facilitator and supervisor.
