"Man's Search for Meaning" is a book by Viktor Frankl, a psychiatrist and Holocaust survivor. It explores his experiences in Nazi concentration camps and how they shaped his understanding of human existence. Frankl argues that finding meaning in life is essential for psychological well-being, even in the face of suffering. The book introduces logotherapy, a therapeutic approach developed by Frankl, which emphasizes the importance of purpose and meaning. He suggests that individuals can endure hardships by focusing on their values and goals, ultimately leading to a more fulfilling life.