Viktor Emil Frank (born March 15, 1905, Vienna, Austria) was neurologist, psychiatrist, philosopher, author, and Holocaust survivor. He developed the psychological approach known as logotherapy, widely recognized as the “third school” of Viennese psychotherapy.

The basis of Frankl’s theory was that the primary motivation of an individual is the search for meaning in life and that the primary purpose of psychotherapy should be to help the individual find that meaning.

Frankl published 39 books. The autobiographical 'Man's Search for Meaning', a best-selling book, is based on his experiences in various Nazi concentration camps. His acknowledgement of meaning as a central motivational force and factor in mental health is his lasting contribution to the field of psychology. It provided the foundational principles for the emerging field of positive psychology.

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