What does the most composed person you've ever seen look like?

When someone tries to make things difficult for you, there's no need to be afraid. Pour them a glass of water and let them drink it slowly while they talk...

For those who nitpick and criticize, you can encourage them to focus on the details. The more detailed they are, the more it shows they are making a mountain out of a molehill. No matter what they say, you can dismiss it as an emotional issue.

If you really can't stand it and feel the urge to retort, remember not to argue about the content of what they are saying.

If you want to undermine their confidence and make them lose their momentum, you can do this: listen quietly while they speak, without showing any change in expression. After they finish, tell them you have something stuck in your teeth, making them so embarrassed they could dig out a three-bedroom apartment with their toes.

If you want to make them suspicious and paranoid, do this: ignore their attacks and simply say, "I didn't believe it when others told me about you, but it turns out their opinions about you are true. I wasn't wrong." Then say nothing and walk away.

This is a psychological tactic. When faced with such annoying people, you might want to give it a try.