Demons Defeated by Bill Subritzky
Or the Pilgrim's Progess by John Bunyan
Battlefield of the Mind by Joyce Meyer is also a good one.
I also found June Hunts series of Biblical books very good. For Christian living. I was reading one called Confrontation. But that's more about resolving disputes amongst Christians.
I know some people shy away from Spiritual warfare books, but sometimes you got to know what you dealing with -better the devil you know than the one you don't etc.
Bondage Breaker by Neil T Anderson is quite useful.