Viktor Frankl's work has been described as "the most important contributions in the field of psychotherapy since the days of Freud, Adler and Jung." In The Doctor and the Soul, Dr Frankl maintains that the individual's most important need is to find meaning in life and the frustration of this need results in neurosis, suffering and despair. A doctor's work lies in finding personal meaning in a patient's life, no matter how dismal the circumstances of the life.