what's wrong with me??

oh lately, i'm thinking about death a lot and i'm dealing with some kind of an existential crisis. Not a nihilistic existential crisis, but you know, the kind of crisis "what if tomorrow i don't wake up". And the sickest part is that all these thoughts come up while i'm trying to make my self sleep. Ι'm thinking "death is imminent", instead of counting sheeps.
I keep analysing things in my head until I turn everything into a phobia. Not a positive trait.
listen to this please