Although I am normally sceptical about self-help books, I bought this hoping to understand a bit more about bullying from the perspective of the bully and the bullied. I found it tremendously helpful. Having experienced bullying and the trauma that goes with it, I wanted to understand why it happened (why me? why her?), in the hope that I will deal with it better next time round. I found the descriptions of the bully's behaviour and the reasons for that behaviour full of insights. I have met a lot of people who think they can tell you what you like and how you feel. Controlling People maintains that this belief is a delusion, and goes on to explain why, and how people can come to hold this belief. It helps the bullied recognise this behaviour and resist it, and the bully begin to break the spell cast by their mistaken belief.
It does ask for some perseverence. If you don't get to grips with the terms used (Teddy? Witness? Spellbreaker? Pretend Person?) it is confusing, and it takes a couple of concentrated reads to fully understand. But it's worth the trouble - definitely the best book I've read about bullying.