Who is this 'I'? Is 'I' a collection of thoughts and feelings? Does 'I' include some semblance of physical appearance? Where does this 'I' start and end? If 'I' eat an apple, is it still an apple or is it now 'I'?
I realise these are tricky questions to think about, please try not to worry. If it helps, I can tell you that I've less fear of death after taking time to think about this sort of stuff, I hope in time you'll find a sense of peace too. If you want to explore it some more, I'm here for you.