Notice that the mind is thoughts, sensations and perceptions.
Notice that you are the formless silent witness of thoughts, sensations and perceptions.
Notice that when you see a Cedar tree, you are not the tree, you are not defined by the tree you witness.
Similarly, you are not defined by the thoughts you perceive.
You are the formless silent witness that has no boundaries, no phenomenal characteristics.
You are the Reality of Being Awareness.
What Ramana Maharshi referred to as the Self. What the scriptures refer to as Brahman.