I think the biggest secret is that all the knowledge is already out there if you are willing to look but being able to work directly with others and following a structured program of learning makes it probably a bit better than simply going it alone.
If you look at the reviews or testaments of people who have been part of mystery schools, i am always surprised to see that they normally use books that are in publication. I also believe there is a risk of wanting to be in the know or with the in crowd, feeling special because of the secrecy.
If you look at the reviews or testaments of people who have been part of mystery schools, i am always surprised to see that they normally use books that are in publication. I also believe there is a risk of wanting to be in the know or with the in crowd, feeling special because of the secrecy.