I agree that it seems worth looking into. I've looked into NLP a little bit. I'm always turned off by the voices of its practitioners. Their tonality, speed, excitement, and rhythym scream "I am trying to sell you snake oil!" to me. This is odd for people who claim to be masters of subcommunication via speech. They often repeat the charlatan pattern I first observed in Tom Brown Jr., of spending as much time telling you how great what they are telling you is, as telling you things.

This applies also to the popular self-improvement gurus, including Tony Robbins. I cannot stand to listen to an audio of him; it's like being trapped in a small room with a door-to-door vacuum-cleaner salesman.