The best way to deal with stress, trauma or grief is to actually allow oneself to address it. Culture, society and family have us “Deal” with things in some of the least healthy ways. Drinking, fighting, arguing and just “being a dick” seem to be the top ways people actually address their loss. We are not allowed to actually feel it.
Take one day. Let yourself feel what your body is telling you. It will not be enough to heal, but it would work for at least one more year.