From The SpiritWiki
Not Self is a vedic term syncretic with the Bodily Ego which is not the Spiritual Ego or higher self.
Bodily Ego > Acquired Self, Antahkarana, Apparent Ego, Awkward Self, Earthly Self, Elusive Self, Empirical Self, False Personality, Illusory Self, King of the Body, Little Self, Not Self, Outer Self, Personality, Self, Sensual Ego, Subtle Body, Talking Self
"That (correct knowledge) only is attained by right discrimination between the Self and not-self. Therefore, discrimination must be made between the inner Self and the non-real individual (205)."
- ↑ ———. The Vivekacudamani of Sankaracarya Bhagavatpada. Edited by John Grimes. Routledge: Amazon Digital Services, 2001. https://www.amazon.com/gp/product/B079QKM91M/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B079QKM91M&linkCode=as2&tag=lightningpa02-20&linkId=098e1d41298dd714ecb3c35227699c8e.