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When you listen to the voice in your head, listen to it impartially. That is to say, do not judge. You'll soon realize: there is the voice, and here I am listening to it, watching it. This I am realization, this sense of your own presence, is not a thought. It arises from beyond the mind.

Eckhart Tolle (2001). “Practicing the Power of Now: Essential Teachings, Meditations, and Exercises from the Power of Now”, p.19, New World Library
When you listen to the voice in your head, listen to it impartially. That is to say, do not judge. You'll soon realize: there is the voice, and here I am listening to it, watching it. This I am realization, this sense