Admire Authoritarianism; Value the Opinion of Strangers Over Family and Friends; Walk Ahead of You; Constantly Interrupt; Move/Hide Your Things; Destroy Property; Chameleon. To fully understand why a narcissist does the things they do, you need to understand narcissistic personality disorder (NPD) and how it develops. What drives a narcissist insane? The thing that drives a narcissist crazy is the lack of control and the lack of a fight. The less you fight back, the less power you can give them over you, the better,” she says. And because they never think they're wrong, they never apologize. About anything. Do narcissists eventually self destruct?.