According to sigmund freud theory, everyone in this world has the good and bad part in themselves.
ID: devil part
EGO : our own self who carries the two version personality between ID & SUPER EGO.
SUPER EGO: angel part.
There is no wrong if human carry the devil part in self as a human nature. But when you let it control your emotions, feelings, mentally and put it an active mode, definitely you transform into irrational believer, you and yourself be disorganized, and suffer with most of unfinished business.