Irving D. Yalom is an American psychiatrist and psychotherapist, born on June 13, 1931. He is best known for his contributions to the field of existential psychotherapy and for his influential books, including Love's Executioner and The Gift of Therapy. Yalom's work emphasizes the importance of understanding human existence, relationships, and the therapeutic process. In addition to his clinical practice, Yalom has taught at Stanford University and has authored several novels that explore psychological themes, such as When Nietzsche Wept. His writings have made significant impacts on both psychology and literature, making complex ideas accessible to a broader audience.