Look, it was written in 1987, so the kids in the illustrations look like they’re about to go see The Breakfast Club, but the advice is bulletproof. Adele Faber and Elaine Mazlish basically invented the idea that you shouldn't just tell your kids to 'be nice' but actually give them the tools to handle their own beefs.
It’s not a dry textbook. It’s full of comics and 'try this' scenarios that make it weirdly readable for a parenting book. If you're tired of being the referee and want to become a coach instead, this is the one. It’s a classic for a reason and arguably the most useful thing you'll ever put on your nightstand.