Scared of dying in my sleep

Recently(about 3-4 weeks ago) i can't sleep anymore because i'm scared i will die in my sleep. I was already anxious in general for the whole dying thing, but for sleeping started recently. I had/have a lot of stress since it started and people around me were dying, plus the fact that i'm prograstinating since i don't know when, and i'm scared that i will die early and never have had a good life.

Now my mind has it's own control when i'm lying in bed. When i almost fall asleep, i wake up instantely in panic. I also see some weird stuff in my room when that happens.. some kind of object or thing, always something different but it fades away slowly.

It's not only the fear of dying that keeps me awake, i also feel very dissocated. my mind is telling me that i am not real, and the fact that i talk to myself in my head scares me a lot. Not like, what i say to myself, but just the fact that we people have our own thoughts and voices closed in our own heads.

Can anyone relate? How do you cope with this?