When I had my wisdom teeth removed as a kid, I was absolutely terrified about the metaphysical consequneces of general anesthesia, so I know where you're coming

When I had my wisdom teeth removed as a kid, I was absolutely terrified about the metaphysical consequneces of general anesthesia, so I know where you're coming from... Here are a few thoughts - Think of the universe not as evolving through time, but as a static spacetime structure. You are part of this structure... you do not have infinite time extent, but neither do you have infinite space extent, and that's fine. The past isn't gone, you're just not experiencing it, but it exists. - Read up on Tegmark's mathematical universe theory.