I’ve encountered this lesson from enlightened master George Gurdjieff and somehow he has unfolded the workings of the ego, the mind, that usually hinder us from seeing how sick we really are. He talks about the Internal Considering and point blank he has diagnosed the form of disease man is ill with.
Check out the link if you are interested with what he says. I for one have to exert effort to understand the wisdom written by him.
http://www.satrakshita.be/internal_considering.htm