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.