Technically no matter what your soul is going to heaven or hell, it's just your body that dies. Your soul is immortal. Everyone's is. It just comes down to where it's going when it's body dies. Your soul just gets transported to where your new body is. Heaven or hell.
I sent the response 'Jesus conquered death for us'. You either go to Heaven or Hell (your choice, pretty much). Annihilationism is false doctrine. Please go here- it should answer your question with more clarity and detail: http://www.gotquestions.org/annihilationism.html
This site has helped me with other questions I've had before and I'm sure it'll help you as well.