This book is an organized presentation of the psychological Work of the Fourth Way System, derived from Maurice Nicoll's "Psychological Commentaries on the Teaching of Gurdjieff and Ouspensky. The "Commentaries" are five volumes of Nicoll's teaching to his students on a wide range of Fourth Way topics. However, they are arranged by date and don't follow any structured approach to this priceless esoteric system of instructions for the student seeking the means for self-change. Although there are other aspects of the Teaching, this book is focused on the verifiable ideas and practices of the psychological Work, presented in an understandable progression for both the novice and those who are already studying the system. It is the author's hope that students at any stage can use this reference to find guidance into the intended aim of The Work, in order to carry it forward as the sacred path it was meant to be. It is based on the inner dimension of Christ's teaching, but because it expresses the psychological level of understanding, it applies to anyone who is seeking meaning and an authentic path that leads to real personal development.