John is the author of The Diamond Approach: An Introduction to the Teachings of A.H. Almaas (Shambhala Publications), entries on Transpersonal Psychology and Wilderness Rites of Passage in the Encyclopedia of Religion and Nature, and the chapter on the Diamond Approach in The Handbook of Transpersonal Psychology, among other writings. His primary interest is full human development with a special focus on the intersection of spirit, psyche, and nature. John leads Diamond Approach groups in Colorado, Vancouver, Seattle, and Connecticut, guides wilderness retreats, and directs a training program for Diamond Approach teachers.