Can't get it out

Crawling beneath my skin,
Looks like the evils gonna win.

Can't seem to get it out,
No matter how much i scream and shout.

It's eating me from the inside,
It creates problems with each stride.

It starts in my head, ends up in the soul,
Tearing it's way through, leaving a gaping hole.

It won't leave me, it enjoys my pain,
It'll keep going even after it devours my brain.

I don't think I'll ever be free,
From the demon deep inside me.

I hear it in my mind, it's coming after my heart,
I know if it gets that far, it'll completely tear it apart.

Trying to destroy it, this time, for good,
It tells me not to kick it out, even though i know i should.

I must look deep inside, to get it out of my head,
Because if i don't, I'm basically as good as dead.