Clegg explains why you lose arguments even when you're right: you abandon logic and react emotionally, giving opponents a chance to point out your misstep instead of their original wrongdoing. Stay in logic land.
Chapters
When people tried to trick him, he didn't get all bent out of shape. See, the reason you lose arguments when you're right is because you cross out you. You cross over out of logic land into emotion land. And when you cross over out of logic land into emotion land, emotions will make you say something you will wish as soon as you said it you had not said. Emotions will make you do something that as soon as you do it, you'll wish you had not done it. How many are picking up what I'm putting down? And so what happens is somebody does something wrong to you, maybe somebody that you love, maybe your wife, maybe your husband, maybe one of your children, maybe your parents, they do something and it was wrong, it was clearly wrong. And then you get sideways and you do something wrong. And now they can point at the thing you did wrong, which makes your point at the thing they did wrong nebulous in their mind. And so you lost the argument even though you were right.