Start with high-confidence self help books, then narrow by subgenre or adjacent topics.
Unlock the Hidden Job Market
Duncan Mathison, Martha I. Finney
The Power of Positive Thinking
Dr. Norman Vincent Peale, Clifford Peale - introduction
No More Mr Nice Guy
Robert A. Glover
Daily Reflections
Alcoholics Anonymous World Services Inc., Alcoholics Anonymous
The Secret of the Universe
Nathan R. Wood
The Bhagavad Gita According to Gandhi
Mahatma Gandhi
Attaining Your Desires
Geneviève Behrend
How to Live on 24 Hours a Day
Arnold Bennett, Jim Roberts
Hardcore Grief Recovery
Steve Case, Steven L. Case
Secret of the Universe