Devil Heart

Have I become a Devil?
My mind has been in turmoil. It's like as if part of me is trying to get out.
Lots of bad thoughts kept on appearing in my mind!
Am I going mad?
Am I becoming a Devil?

How do you know what a Devil does?
How do you control a Devil coming out of you?

Will the Devil inside me consume me?
Will the Devil inside me control me?

How can I avoid becoming the Devil?
How can I avoid having a Devil Heart?