Voodoo is the art of auto suggestion. You do not turn into a Voodoo but your mind is influenced by the suggestion put there by the Voodoo Witch Doctor. It is similar to the Australian Aborigine putting a bone into a tribesman. No bone goes into the tribesman, but the influence of the suggestion that one is placed there is enough cause the death of the unfortunate tribesman. They give up their lives because their belief is so strong.