Many people get stuck in self-inquiry because they believe it's about trying to *figure out* the answer to the question "Who am I?" This prompts them to all kinds of misleading thought processes. Self-inquiry is really about the consistent redirection of attention towards the I, recognizing that every time you think you have it, you are actually focusing not on the I, but on an object of thought. But that gives another opportunity to redirect. So keep redirecting: every waking moment. That's self-inquiry.