That the dark will one day eat me.
not a fear of the dark, i can handle dark, i just have a creeping albeit irrational fear that something beyond human comprehention LIVES in it.
Had it since I was a kid, I have always been the last one to go to sleep in my house so i'm downstairs and i shut off the light before i go up and the dark literally feels ALIVE to me.
it's stupid and irrational.
Which is why i came up with an equally irrational solution to the problem.
If i can get upstairs and in my room within ten seconds of shutting off the light then the dark cannot eat me.
even if the light is off in my room.
Don't ask me how but it calms me down.