The prevailing Zeitgeist in psychotherapy is the integration of leading systems of psychotherapy. Psychotherapy could be enhanced by the integration of the profound insights of psychoanalysis, the powerful techniques of behaviourism, the experiential methods of cognitive therapies, and the liberating philosophy of existentialism.

Although some psychotherapists insist that such theoretical integration is philosophically impossible, ordinary people in the natural environment can be remarkably effective in finding practical means of synthesising powerful change processes.