Dr. Kokoszka is currently the head of the Department of Psychiatry at the Medical University of Warsaw, Poland and author of more than ten books in Polish. He is a psychiatris, psychologist, psychotherapist, and group analyst trained at the Institute of Group Analysis in Heidelberg, Germany; cognitive-behavioral therapists with the certificate of Italian Association of Cognitive and Behavioral Therapy and has been a visiting fellow at University of Oxford, University of California at Irvine, Cleveland State University, and Wayne State University in Detroit.