Re: i can't accept death :( please help..
I used to be terrified of death. Then one day I began to really look at how older people acted, and I realised that the vast majority of them aren't afraid of it any more.
I also have a faith, but actually that doesn't necessarily answer my 'whay happens' questions. However, it does reassure me that I have a purpose and that whatever happens, death is not The End. For me, facing it was what helped. Others do the opposite.
I've thought a lot about my Health Anxiety and have realised that it's really been about fear of death. Those What Ifs, if you follow down the trail, all lead to the same place. So as people have said above, find a way to make peace with it.
Maybe a place to start would be why you think it's not fair. Where does that idea come from? I think that might help you to get a bigger perspective, to see that some of our questions possibly come from a place Beyond us. In which case, this might NOT be all there is...
And don't despair. Our ideas and beliefs morph all through our lives, so it's likely that this concern won't be there your whole life. It's a shame to waste our lives worrying about the bits we can't really know the answers to, after all. Allow yourself to hope that you will get past this, because it's hugely likely that you will.
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All manner of thing shall be well... (Julian of Norwich)