“Let the Sun Not Set with You in a Provoked State, Neither Allow Place for the Devil.”—EPHESIANS 4:26, 27. 

“Let the sun not set with you in a provoked state, neither allow place for the Devil.”—EPHESIANS 4:26, 27.
Here is an excellent article that touches on many ways that we may be allowing a place for the Devil. The article talks about apostasy, pride, anger, resentment, dress and grooming, being critical of others, chronology and failed expectations.