We are often getting ahead of ourselves in the spiritual search. There is a sense that you are an individual - that you are a person abiding in a body-mind. And every bit of seeking is done from within this sense, within this paradigm of reality.
So we hear that all is one or there is no separation. So we naturally try to make sense of that from within our paradigm of reality, a reality of "things". We try to figure out how that chair is the same as the desk, the same as the cat or the rock or the mountain. How in the Hell are things one? It just doesn't make sense, and really it never will.
We expect to be able to find Oneness from the perspective of Manyness, to find "nonduality" from a dualistic mindset, to force-fit our concepts into enlightenment. It's nonsense and futile.
We must slow down and get a handle of the most basic pointer - are you the mind, or are you aware of the mind?
Can you come to a conviction on this question, before trying to superglue the universe of objects into some big conceptual ball of Oneness? Can you say with certainty if you ARE the mind, or are you aware of it?
You are able to describe thoughts. They must be something which you are aware of. They are something which comes and goes - you remain unchanged as they come and go. What you are ISN'T a thought. Can you notice this with certainty? Can you come to a concrete conclusion about this one point? Then when thoughts come, you know with confidence that they are not what you are - you are not the mind. This single point is critically important, yet we overlook it or just gloss over it in the attempt to jump-in head-first into enlightenment.
But it won't ever work, because it's not that enlightenment is something difficult - it's that our idea about reality is an incorrect translation. So we must notice this translation - notice where it is false. And the primary false concept is that you ARE the mind. Notice, once and for all, that this idea is false. You are NOT the mind.
Then immediately there is a freedom from the mind - because you are there as the "watcher" of mind. You begin to take note of it instead of being bound by it, subject to it's constant reference. You are something altogether outside of the mind - you are not a thought, not an idea, not a concept, not a memory, nothing the mind has to offer can capture you, bind you. You notice yourself as something in which mind arises. That "lifelong" identification is broken.
Can you say with 100% confidence, right now, that you are are not the mind, but that to which the mind appears? Can you put that false concept to bed, once and for all?