I dunno. I am rather partial to the following interpretation:
Assuming that the many worlds hypothesis is true:
1) All possible universes exist simultaneously.
1a) This means that if it is even remotely possible, there exists a universe where I achieve apotheosis.
1a^1) This means that in that universe, I have access to the full knowledge/minds of all other universes in which I do no myself directly achieve apotheosis.
Ultimately concluding in:
If it is even remotely possible that I am capable of accessing other universes, and am capable of transcending normal reality/mortality (eg, apotheosis), then in at least one such universe, I get access to, and absorb the knowledge/consciousnesses of all other universes, the one I am currently in included.
This means that if it is at all possible, I *will* exist as part of a godhead after my "death", somewhere in the greater multiverse, should many worlds be true.
If you dont want to ascribe to many worlds as a thing, there is always this fallback:
Altering the past of this world line appears to be impossible, as it results in causality violation. Assuming the universe exists in a naturally timeless state, and we, the inhabitants of the universe simply experience time as a local phenomenon, then the mere fact that I have existed at all means that I am eternal, like the universe is.