Born and raised in Iran, Peseschkian came in 1954 to Germany for his studies in medicine at the universities of Freiburg, Frankfurt am Main and Mainz. After his medical specialization and his dissertation, he had his postgraduate training in psychotherapy in Germany, Switzerland, Austria and the United States. As an international lecturer, Peseschkian had traveled to 67 countries worldwide. A global network of over 100 local, regional and national centers of Positive Psychotherapy has been established in 33 countries up to date. Until the end of 2006, in Germany, Austria, Switzerland and Luxemburg about 38.000 medical doctors, psychologists and pedagoges have been trained in his method.