As someone who collects oddities of that nature, I've found that there are in fact texts only certain people are given access to, they do appear online from time to time, they are sometimes legit, real and functional, but if you have a real one people either won't believe it and won't take it even if you offer it, or if they do take it, won't try it or won't try it long enough to get it to work. So I don't talk about them, or what they teach, because it's too weird for most people to even consider a possibility. Audio and video recordings of these spiritual "secrets" also exist, fwiw, and also can be located if one searches thoroughly.