I've learned to use Dianetics on others, and had about 10 hours or so of auditing in it (counselling where the counsellor listens and guides, does not evaluate). In 5 hours I lost my alcohol addiction. The rest was a relief of stress in general, both emotional and some physical, like early experiences at the dentist, and being run over by a car when I was a kid. This was very valuable to me and 55 years later, I still have the benefits, they didn't wear off at all. YMMV. It's good for whom it's good for. All of it that I got was given to me free from students at the Scientology Org in NYC. They needed people to do their practical training. They were nice folks and I had zero issues with it. In using it on others, I noticed they had gains and appeared very satisfied with it.