There's no way to put a limit on what one may accomplish individually if the intent is an impeccable intent. Don Juan's teachings are not spiritual. I repeat this because the question has come to the surface over and over. The idea of spirituality doesn't fit with the iron discipline of a warrior. The most important thing for a shaman like don Juan is the idea of pragmatism.
Carlos CastanedaThere is a flaw with words, they always force us to feel enlightened, but when we turn around to face the world they always fail us and we end up facing the world as we always have, without enlightenment
Carlos CastanedaYou see all of us go through the same doubts. We are afraid of being mad; unfortunately for us, of course, all of us are already mad.
Carlos Castaneda