Looking for a book where the protagonist used to be into violence, but successfully transitioned to a peaceful life where they no longer propegate it. Can be fiction or nonfiction, but I prefer stories to self-help type books. Sort of looking for a post-action/adventure where the hero settles down and has a nice life, or something where the protagonist experienced violence as a child/young-adult but refuses to continue the pattern in adulthood.
by trippy-puppy