About possible afterlife

1: Nothing. Death is the end of consciousness, and there's no consciousness after it. This life is the only life you will ever have.
2: Quantum Immortality. You see other people die, and other people will see you die at some point, but from your own point of view, you will never die, you will keep living forever in this Earth reality.
3: Monotheistic interpretation based on morality and only two/three possible afterlives: there is one god or goddess, and this deity will judge you and place you in heaven if you have behaved well and kindly to others, and will place you in hell if you have behaved badly and hurt others in your life. The interpretation with three possible afterlives can also include an in-between place.
4: Monotheistic interpretation based on morality and multiple degrees of heaven/hell. Depending on how good or how evil you were, the god or goddess that judges you will place you on a different degree of heaven or hell.
5: Monotheistic interpretation based on theological adherence: there is only one god or goddess, and (s)he will place you in heaven or hell based on whether you have been a follower of his/her religion or not. Just as before, it can be interpreted as two possibilities (heaven or hell), three possibilities (heaven, hell, and an in-between place), or multiple degrees in-between. Just like the other one, the afterlife can either be permanent and last forever, or it can be temporary, and after that either you reincarnate, or there will be true death.
6: Monotheistic interpretation where everyone goes to heaven after death. You go to heaven.
7: Monotheistic interpretation where everyone goes to hell after death. You go to hell.
8: Reincarnation. You reincarnate. It can either be infinite reincarnation, or finite reincarnation where one day you will reach true death.
9: You had a previous life, and this is your second and last life, after which there is true death.

There are many other ones too!

In Christian and Islamic afterlives, there is the idea that "the self", and one's memories, persist after death. However, I think in many (but not all) views, after death, the concept of "the self" dissolves, in one way or another. Here are some views where the concept of "the self" dissolves after death:

1: True death. A view popular among materialists and atheists. You just cease to exist after death, and there is complete lack of consciousness. In this view, "the self" simply disappears after death.
2: Return to The One. This view says we are all The One, and individuality does not exist. When we are born, we are given life. Life is simply the illusion that we are individuals separated from everything else. The illusion of individuality. After death, we return to The One, (which some people might call God, if that's a word they prefer using), just like we were when we weren't born yet. Death is the true awareness that there is no separation, life causes the illusion that we are individuals, and that we are separated from what is 'not us'.
3: Becoming part of the Collective Dead. After death, we become part of the Collective Dead, losing our identity, and becoming the same thing as all the other dead living beings combined, with no individuality or separation.
4: Our souls get divided in pieces, and each piece will become part of a specific god or goddess. Our personalities, as humans, are complex. To some degree, we all have empathy, sadism, hedonism, masochism, survival instincts, willingness to sacrifice oneself for the collective good, and many other aspects within our souls. In this view, souls are seen as multi-layered, and each different part of our souls gets separated from the rest, and becomes part of a specific deity. Our empathic side becomes part of the god of empathy, our sadistic side becomes part of the god of sadism and so on, losing our identity and our "self", as well.