Heideggerian Existential Therapy: Philosophical Ideas in Practice - Paperbackby Mo Mandic (Author) Heideggerian Existential Therapy focuses on Martin Heidegger's philosophy in order to provide both a wider accessibility as well as understanding of its relevance to therapeutic practice. Author Biography Mo Mandic is an existential therapist and clinical supervisor in private practice, based in London, UK. He also teaches and supervises trainee therapists at the School of Psychotherapy and Psychology, Regent's University London,