What is Gestalt theoretical psychotherapy?

Gestalt Theoretical Psychotherapy is a method of psychotherapy based strictly on Gestalt psychology. Its origins go back to the 1920s when Gestalt psychology founder Max Wertheimer, Kurt Lewin and their colleagues and students started to apply the holistic and systems theoretical Gestalt psychology concepts in the field of psychopathology and clinical psychology. Through holism, "a person's thinking, feeling, actions, perceptions, attitudes and logical operations" are seen as one unity. Many developments in psychotherapy in the following decades drew from these early beginnings, like e.g. group psychoanalysis , Gestalt therapy , or Katathym-imaginative Psychotherapy.