How hazardous would this information be to learn?

Based on the first 90pg of the Teachings of Don Juan, surely there must be some kind of hazard for an individual as outlined in Castaneda's criteria for a mentee to consume this material without a mentor.

Seeking further information without potential to expose myself to something I shouldn't know.

This material has helped me advance myself in my personal life in ways I no longer expected myself capable. If I cease learning, am I likely to regress? As per the paraphrased quote, "the curse of the male sorcerer is that he is easily susceptible to forgetting his awareness". I must have been here a dozen times and each time regressed. I don't want to do this again.

Thanks in advance.