Neuro linguistic program!! NLP for short.

My son has just become a certified practitioner in NLP in England. He tells me that this therapy could help me, but he needs
to be here (impossible). I was wondering if anyone else had tried this kind of thinking with their disease? I only know a very
little of this therapy, but he tells me that it originates from this country. Have you heard of it? I'm obviously proud of my son,
but I'm not quite understanding the theory...