shattered assumptions

When I think about things like dying, living, coping, or treatment, my thoughts immediately jump and I start thinking about how grand concepts relate to this shitty situation. It all becomes totally incomprehensible. The incomprehensibility itself feels idiotic. Is it normal to feel like I've lost my sense of standards? Like there's no such thing as normal? Or that it is meaningless? Everything's so pointless that there's no point in even thinking about what situations are strange? Maybe that's a contradictory question.