"WHO AM I?" IS NOT REALLY A QUESTION because it has no answer to it; it is unanswerable. It is a device, not a question. It is used as a mantra. When you constantly inquire inside, "Who am I? Who am I?" you are not waiting for an answer. Your mind will supply many answers; all those answers have to be rejected. Your mind will say, "You are the essence of life. You are the eternal soul. You are divine," and so on and so forth. All those answers have to be rejected: NETI NETI -- one has to go on saying, "Neither this nor that."