I like it. The beginning part is a bit vague and wishy-washy, but that works with how it’s tied to the ending. So, I started off not liking it, but within the context provided by the second half it paints a nice portrait of where one’s thoughts might go in such a situation.

I see what you’re trying to do, but I don’t think it works very well. It’s almost like the hospital scene is an afterthought to ground an otherwise vague reflection. Also, there’s a reference to two people that get into almost identical accidents. Is that the narrator and his sister? If so, it isn’t apparent from the text.