Books like Understanding Your Worst Enemy
Mel Bond
Understanding Your Worst Enemy is 130 pages, about 2 hours 23 minutes at 250 words a minute.
12 books to read next
How long each takes
Glimpses of the Devil 5.0 h Cronista All'inferno 5.5 h 
Hostage to the Devil 8.8 h 
Deliverance from Evil Spirits 5.3 h 
Of Love and Other Demons 3.4 h 
Beware of Angels 3.5 h 
Spiritual Warfare 2.4 h 
Legion 4.9 h 
The Screwtape Letters 2.9 h 
Werewolf 4.1 h 
Beware the Night 5.8 h 
An Exorcist 3.7 h Bar height shows length. Estimated at 250 words a minute.