Become Darkness

There is darkness within me
I can almost feel it in the back of my mind
I keep watch on it with vigilance most steadfast
     But there are times when it casts a shadow
Black and white looks almost grey as it is touched by that thing deep within
Things begin to look different, my eyes are clouded and soon I can no longer see
It brings with it fear, panic, and anger and comes to just under the surface
My mind becomes dark
There is cold
With the usual semblance of me no longer to be seen I am become darkness
I am mean and cruel.  I am short tempered and unfair.
I am hurtful and almost care enough to take pleasure in it.
The truth is I am most apathetic.  I just want to be left alone.
In what seems like a long eclipse of midnight darkness seems like it has no end
     But then comes a slow sunrise and the darkness recedes like a tide of the sea
     Carrying with it all the garbage it has accumulated during the night
The sun shines and I am myself again, no longer an agent of night
But on the horizon the darkness waits
It builds and festers until the light slumbers again
When once again day becomes night