Existential crisis.

I've been through quite of a few existential crisis, dealing with things like Depression, OCD and anxiety..

I lose the concept of everything, my reflection is myself, but it's dark, I lose the concept of why immorality is bad, or why positivity is good, I lose the concept of what humanity is, and I feel like I can't understand anything, even the simplest of things, because my mind feels like it's on a loop with no clarity, and most importantly, things just simply make zero sense.

Deep down I know these feelings and ideas are wrong, but despite of that I can't feel anything otherwise, they may leave some aftermaths for days until I reincorporate myself to a healthy mindset.

Anyone care to share some thoughts about it?