The voice

I believe I'm beautiful.
I believe I'm smart.
I just don't believe it in my heart.
My soul is black.
My mind is grey.
And mostly it's because of the words you say.
You call me fat.
You call me ugly.
But others think I'm lovely.
I don't know why you say these horrible things.
Your just the voice inside my head.
I just want to know why you want me dead.