Victory In The Unseen Warfare, translated by Jack Sparks from Lorenzo Scupoli’s Spiritual Combat. It is serious, straightforward, and contains deep and profound wisdom on how those striving for union with God can arm and defend themselves against the constant spiritual attacks they are sure to face along “The Way.”
Breakthrough Advertising, by Eugene Schwartz. There is good reason for why this book is the most sought-after resource by copywriters around the world. It’s expensive, and worth every single penny.