Fourth Instinct: The Call of the Soul

TV personality and bestselling author Arianna Huffington explores our forgotten instinct--the search for spirituality and meaning in life. She shows how seeking fulfillment in the the first three instincts--biological survival, sexuality, and power--leads to aggression, depression, and addiction--while the Fourth Instinct transforms life.
Have you read Fourth Instinct: The Call of the Soul? What did you think?