Start with high-confidence applied psychology books, then narrow by subgenre or adjacent topics.
Phil Hellmuth Presents Read 'em and Reap
Joe Navarro, Marvin Karlins
David and Goliath
Malcolm Gladwell, Little, Brown & Company
The Gift of Fear
Gavin de Becker
Mindset
Carol S. Dweck
Psycho-cybernetics
Maxwell Maltz
The Design of Everyday Things
Don Norman
Range
David Epstein
Understanding Behaviorism
William M. Baum
Choke
Sian Beilock
Peak Performance
Brad Stulberg, Steve Magness
Rapport
Laurence Alison, Emily Alison