When you maintain a memory of “what was” while processing in parallel “what is,” you end up with a sense of self.

When you let go of “what was” and just stay with “what is,” the sense of separate self disappears.

It is not that difficult to experience this kind of ego-death for a split second.

When this way of being/non-being goes on autopilot, the subjective distinction between you and the Universe at large disappears.