The Gift of Fear by Gavin de Becker is nonfiction. As an abuse survivor, I wish I'd read this book sooner. He helped me embrace the fear that warns me and recognize the fear that is really more about worry and anxiety that I need to learn to overcome. I also learned about the need to not engage with people who are overly persistent. I could have really used that knowledge long ago. Better late than never. The link is to his website featuring the Mosaic Method, a threat assessment system.