What Is It In Your Experience That Neither Comes Nor Goes?

When you take a close look at yourself, you find the world body mind, but you do not find a personal entity/doer/chooser. You also find formless and everpresent impersonal awareness.
Check it out.
You believe that you exist in your thoughts.
They appear to you but you do not appear in them except as a belief.
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What is it in your experience that neither comes nor goes?