This was incredible. It was like being mentored by Andrew Carnegie (whom Napoleon Hill interviewed for his tips for success). Hill’s contention (via Carnegie) is that intense focus upon a subject connects our mind with the Infinite Mind (or God, or the divine — variously called throughout the book), and emotion is a fuel that keeps us focused with single-minded determination upon that subject. Particularly if we combine that focus with a mastermind group of like-minded people (Prov 20:18, 24:6), nothing will be impossible for us (Genesis 11:6).
The story went through various titans of business, magnates, inventors, etc, and how they applied this principle to achieve their ends. As I read, I kept thinking of the proverb, “It is the glory of God to conceal a matter. But the glory of kings is to search out a matter” (Prov 25:2).