""New Thought Or The Psychotherapy Of Optimism"" is a book written by J.W. Courtney, which explores the philosophy of New Thought and its potential to improve mental health. New Thought is a spiritual movement that emerged in the late 19th century, emphasizing the power of positive thinking and the belief that our thoughts can influence our reality. The book delves into the origins of New Thought, its key principles, and its impact on psychotherapy...