Byron Katie is an American speaker and author known for her self-inquiry method called The Work. This method encourages individuals to question their thoughts and beliefs, aiming to reduce suffering and promote mental clarity. She developed this approach in the 1980s after experiencing a profound personal transformation. Katie has written several books, including Loving What Is and A Thousand Names for Joy. Through workshops and retreats, she teaches people how to apply her method in their lives. Her work has gained a global following, influencing many in the fields of psychology and personal development.