Existential psychotherapy is a form of psychotherapy based on the model of human nature and experience developed by the existential tradition of European philosophy. It focuses on concepts that are universally applicable to human existence including death, freedom, responsibility, and the meaning of life. Instead of regarding human experiences such as anxiety, alienation, and depression as implying the presence of mental illness, existential psychotherapy sees these experiences as natural stages in a normal process of human development and maturation. In facilitating this process of development and maturation, existential psychotherapy involves a philosophical exploration of an individual's experiences stressing the individual's freedom and responsibility to facilitate a higher degree of meaning and well-being in their life. Background The philosophers who are especially pertinent to the development of existential psychotherapy are those whose works were directly aimed at making sense of human existence. For example, the fields of phenomenology and existential philosophy are especially and directly responsible for the generation of existential therapy. The starting point of existential philosophy (see Warnock 1970; Macquarrie 1972; Mace 1999; Van Deurzen and Kenward 2005) can be traced back to the nineteenth century and the works of Søren Kierkegaard and Friedrich Nietzsche. Their works conflicted with the predominant ideologies of their time and committed to the exploration of reality as it can be experienced in a passionate and personal manner. Søren Kierkegaard (1813–1855) Soren Kierkegaard (1813–1855) protested vehemently against popular misunderstanding and abuse of Christian dogma and the so-called 'objectivity' of science (Kierkegaard, 1841, 1844). He thought that both were ways of avoiding the anxiety inherent in human existence. He had great contempt for the way life was lived by those around him and believed truth could only be discovered subjectively by the individual in action. He felt people lacked the courage to take a leap of faith and live with passion and commitment from the inward depth of existence. This involved a constant struggle between the finite and infinite aspects of our nature as part of the difficult task of creating a self and finding meaning. Friedrich Nietzsche (1844–1900) Friedrich Nietzsche (1844–1900) took this philosophy of life a step further. His starting point was the notion that God is dead, that is, the idea of God was outmoded and limiting (Nietzsche, 1861, 1874, 1886). Furthermore, the Enlightenment—with the newfound faith in reason and rationality—had killed or replaced God with a new Truth that was perhaps