The Devil Inside

When did this come to pass?
How could this come to be?
I was looking for the devil
While he was lurking inside of me
He came to life within me
He seeped through every cell
He basked in the glory
Of constructing my private hell
The thoughts he stirs and spices
Through the corners of my mind
If I let him get the best of me
I would leave you all behind
He preys on my weakness
My insecurities and doubts
He paints my world with a dirty brush
I forget what life's about
I shouldn't look outwards
Have courage and look within
Either I take another breath
Or commit my final sin