How to Use Reverse Psychology

Avoid using reverse psychology in serious situations. There are certain situations where reverse psychology is likely to backfire, and the consequences can be serious. You should always refrain from using reverse psychology when someone's health and wellbeing is at stake.

For example, say your friend is chronically afraid of doctors. They have a suspicious mole growing on their right shoulder and is resistant to getting it checked out.
Do not say, "You're right. Do not go to the doctor." Your friend's fear of doctors may greatly outweigh their need to resist, and you may reinforce a dangerous behavior.
Article Referenced:
https://www.psychological-consulting.com