Frederick or Friedrich Salomon Perls (July 8 1893, Berlin - March 14 1970, Chicago) entered the history as Fritz Perls, a famous psychiatrist and psychotherapist. He was a Jew born in Germany, who developed absolutely new approach in psychotherapy. According to this theory, one of the primary objectives of Gestalt therapy is the ability to restore the self-awareness which is lost when a psychological disorder becomes evident. This is accomplished by restoring the individual's ability to differentiate, which helps the individual to identify what is and what is not a true part of the self, what provides the individual with a sense of self-realization and achievement and what leads to frustration. Thanks to him the term of Gestalt therapy came into view. It is based on Gestalt psychology and Hans-Jurgen Walter's Gestalt Theory Psychotherapy. His wife Laura Perls also contributed to the development of the Gestalt psychotherapy.