So, if it is true that the (ultimate) outcome is already determined and 'our' human awareness of this pre-existing state is the source of all our anxiety and it is inevitable that we all arrive into this always, already preexisting state, what do we do today?
Once we identify the home of the fear (and you know it's not out there) we can strengthen our awareness of the truth by engaging in 'Real-Thought' and eventually (or, actually, immediately) remember who/what we are.