[10] According to Olav Hammer, the psychiatrist and bestselling author Gerald G. Jampolsky is among the most effective promoters from the Study course. His initially ebook, Enjoy is Permitting go of Fear, that's according to the principles in the Study course, was released in 1979 and just after getting endorsed https://davidhoffmeister.com/david-hoffmeister-the-message/metaphysics-of-a-course-in-miracles/