Wow. This may sound strange but thank you for mentioning existential despair. I feel sad, inherently sad most days now. I cry more. I find myself looking up at the bright blue sky just trying to memorize it. And always I am beyond fatigued, and exhausted. It never goes away. I look at the other people around me and often feel so separate and apart. It’s as if we’re all walking around brain dead. It’s scary.