Inner Demons

There is a demon who lives inside my head, who answers when you say my name. She likes to claw at my brain during the night, so I let her in because it isn't worth the fight. I lay in my bed and toss and turn as she's polluting my brain. I'm rotting away from the inside and it's making me go insane. How will I escape this demon of mine, because sometimes I'm ready to just give up this life. So if i disappear one day don't be surprised because that just means my demon won the fight of stealing my life. But don't you worry because i'll never die because now i'm a demon inside  your own mind.