Ajaan Maha Boowa calls forms of conceit the fangs of unawareness. They bite when, for some reason you can’t focus solely on what you’re doing and the results of your actions, you start to focus on other people and compare yourself with them.
"Conceit is one of the last fetters to be let go. Only arahants are freed from those last five fetters. But still even though they’re the last to be let go, it doesn’t mean we shouldn’t work at them now. The Buddha talks about conceit in two places. In one, he lays out nine kinds of conceit, basically where you compare yourself with other people. In the first set of three, you actually are better than the other person and you think you’re better or you think you’re worse or you think you’re equal. In the next set, you’re actually equal to the other person and you think you’re better or you think you’re worse or you think you’re equal. In other words, even when you’re right about the relative level, it’s still conceit. In the last three, you’re actually worse than the other person and you think you’re better or you think you’re worse or you think you’re equal. Here again, even when your comparison is correct, it’s still conceit. Ajaan Maha Boowa calls these forms of conceit the fan...