Pushing harder often makes people dig in rather than budge

Berger opens with the psychological concept of reactance, the discomfort people feel when they sense their freedom of choice is being restricted, which triggers resistance even to advice that would objectively help them. Telling someone directly what to think or do, he argues, frequently backfires precisely because it feels coercive, prompting a defensive dig-in rather than genuine reconsideration.

His illustrative example concerns anti-smoking campaigns aimed at teenagers: messages that directly instructed kids not to smoke performed far worse than campaigns that instead exposed the tobacco industry's own manipulative tactics, letting teenagers reach their own anti-smoking conclusion through resentment of being manipulated by adults, rather than through another adult telling them what to do.

Takeaway: the more directly you tell someone what to think, the more likely they are to think the opposite.