Not related to tech, but "A Guide to the Good Live" (https://www.audible.com/pd/Nonfiction/A-Guide-to-the-Good-Li...) , "Unconditional Parenting" (https://www.audible.com/pd/Self-Development/Unconditional-Pa...). These have really been mind altering. Both the books have challenged my beliefs and they make a lot of sense once you read them completely.