I appreciate your approaching this topic, but not the generalizations you make without a thorough literature search. Have you read any of Carlos Castenada’s books, or anything else on shamanism? An even more glaring omission are the research and points of view of the International Hearing Voices movement. Please see http://www.intervoiceonline.org/ for starters. This view encourages voice hearers to adopt their own individual framework that works best for them.