well i have tapes for the changes i want to make, and i think the silva book i bought "you the healer" will deal with how to do it without tapes or whatever....so like the saying "give a man a fish he eats for a day, teach a man to fish he has food for life" or whatever, the tapes are fish, and the book is more like teaching me how to fish......i think the silva method is unique in that if ugives u a method to get into a relaxed (alpha) state....where as other books on programming ur subconscious only tell u find a quiet spot and get relaxed