An immensely challenging book-The Irish Times. "A useful self-help book, written by a psychologist and designed to increase self-awareness and a much greater understanding of self"-Irish Independent. An exciting guide for personal healing, growth and development, The Power of Negative Thinking was first published in 1996. It has sold 30,000 copies in its original format and has been translated into twelve foreign-language editions. It is a ground-breaking publication which successfully challenges many of the current ideas in psychology today by making some surprising but convincing claims.