Answer and Explanation:
The expression "face the demons themselves" is related to the fact that a person must have the strength and courage to face everything bad that is within him, in this case, the "demons" are fear, anguish, defects, hypocrisy and the evil that all human beings have within them.
I agree that in order to grow and become a better person, human beings must face their own "demons", this is because when facing what we have bad, we can stimulate and grow what we have good and that allows us to be evolved.