Start with high-confidence christian personal growth books, then narrow by subgenre or adjacent topics.
NIV, Believe, Hardcover
Randy Frazee
Secrets to Exceptional Living
Joyce Meyer
The Awe of God
John Bevere
NIV, New Spirit-filled Life Bible, Hardcover
Thomas Nelson, Anonymous
NLT Dayspring Hope & Encouragement Bible
New Living Translation, Tyndale
Battlefield of the Mind
The Bait of Satan, 20th Anniversary Edition
Humility
Andrew Murray
The Deeper Christian Life
Andrew Murray, Greg Smith
