I think you answer part of what you say, because you say how can novelty exist? But you also say, we live in constant change, so if things change and are different each time, they are always new. Things live by renewing themselves, they are in part totally the same, in a part that may not have changed, and in part totally different, in a part that has changed. Or if you say that everything changes, they are totally different, and therefore new, always.
Although I am one of those who believe, that in essence, things remain (almost) always the same, and change a lot but (almost) only in appearance. It's like there are new ways of looking at the same thing, the old in a new package, maybe it's really new, I don't know.
And on death, I see death as something we have to live, as something necessary, it is a biological need and even of everything we are, therefore it is not good to see it as something bad, but as something that we all must go through sooner or later. It is better to make peace with death than to live in fear of it, because a life lived in fear is not worth living.
We must know that our life here ends with a death, it is the natural end, and it must be, if everything goes well. For me, living like a machine, like a tool, is not even an option.