I've met a lot of people who aren't crazy about oblivion, as you appear to be, but consider this: You've already experienced it, at least to a degree. Whenever you go to sleep, and don't dream, you aren't aware of you memories, experiences, etc. So, unless you are afraid of sleeping, you shouldn't have any problems. In the here and now, you don't like the idea that the fundamental You will be gone forever, but, once you're dead, there won't even be a part of you to notice that. This may be of no comfort to you whatsoever, but, for me at least, it's eliminated the greatest fear of death.