History fans I suggest you read anything by Dr. Mark Felton. Also have a look at Mark's free You Tube Channels. It's all forgotten history, untold stories and coverage of little known events. He does content on guns and weapons from the past that are still in active service today. Stories from post war Japan to modern day Ukraine. He's a gifted writer and presenter. Please check out his stuff ! All the best from London, UK.
"When Violence Is the Answer" by Tim Larkin, and "Violence of Mind" by Varg Freeborn on Audible. Both are good books and highlight the fact that sometimes violence is the only solution, and the need to be able to quickly recognize when this happens.
Same as Stephanie's "Radically accept reality". Google "Officer Michelle Jeter", one second delay in accepting her reality almost cost her life, Anita Wooldridge's failure to accept her reality resulted in her kidnapping, repeatedly raped and held hostage.
I just picked up DryFire Reloaded by Ben Stoeger in paperback, but they have it on kindle too.
"You have the right to remain innocent" by James Duane.