If you use social media, you have felt it. You post a photo, share an opinion, or leave a comment, and someone you have never met replies with pure venom. Your heart starts to race. Your face gets hot. You spend the next hour typing and deleting a reply that you will never send. That is not a small thing. It drains your energy, ruins your mood, and steals time you will never get back.

By the last page, you will be able to spot a troll's tricks before they land. You will understand the brain chemistry that makes online anger feel so addictive, for them and for you. You will learn simple mental shields that keep your peace intact when someone tries to break it. And you will know how to reply in ways that end a fight instead of feeding it. In short, you will stop taking the bait, and you will stop paying for someone else's bad day with your own good mood.