I have two sets of beliefs here. There’s what I rationally believe based on what I know, and there’s the story I’ll be telling myself for comfort if I know the end is soon (and I think benefits me in day to day life too)

The experience of death and if anything comes after is inherently kind of unknowable and if there was a truth to know I don’t think human minds could comprehend it. Even if the answer is nothing, I can’t comprehend experiencing nothing. When consciousness lapses we only have what we experience before and after to contrast it to. So I have to live life with the understanding that I will die and I can’t know what that will be like until it happens.

That being said, we really don’t know anything about how consciousness is connected to our physical forms, and we don’t know that experience ends after death, either. Especially when you consider time may not be linear in the way we perceive it. The closest thing I have to a belief would be some form of reincarnation, where consciousness would resume in another life in another time. Maybe every life is the same consciousness reborn an uncountable number of times. I can’t say I believe this per se, more that it’s just as possible as any other theory, and it’d be a comfortable delusion to pass on with. it helps me feel closer to others too.

I guess my main point is go play Outer Wilds (and its DLC) if you haven’t gotten to it yet. It helped me grapple with a lot of this and even if I’m still scared of the end, I no longer find it overwhelmingly distressing.