It IS bollocks, indeed... and it's an approach practiced by many supposedly legitimate practitioners and healers, as well. It's "no fault." The whole "you weren't open to the teaching" thing has never flown with me... at least a few of these people are accountable enough to start their presentation with "This will work for a LOT of people, but not for everyone." Fine. If I like the odds, I may still go with it, and I'll be prepared to deal with possible disappointment.

Like meditating to lower my blood pressure. I was like "Yeah, whatever..." but I did try it for two months and it did do something... significant.