This demon

it's here again,
this demon in my mind that puts uncertainty in my heart and soils my spirit
it pushes aside my reasoning and clouds my happiness
this demon from where it comes I don't know
there has to be a way to fight off this disease that is decaying my self respect and contaminating my common sense
I scream and moan at this demon yet I let it control me; use me; devour me
until there's nothing left but a pitiful, sorry shadow of me
that casts starkness over my very will to exist; to live; to love
someone help ; my insecurity is killing me