Nothing new here: Simple self hypnosis. Or Christian Science...
Although 80 pecent of folks can use self hypnosis, about 20 percent are very vulnerable to suggestions and delusions under hypnosis.
As for curing cancer: it’s about the same as faith healing. One in a thousand are actually cured, the rest think they are better, and a couple dozen die because their supposed “cure” is fake, and they stop the real medicine that would actually cure the cancer.
No, it is actually anti-hypnosis. You have in incorrect.