Do you make a good first impression? Like it or not, people judge you when they first meet you. It’s human nature. We all do it, and there’s a psychological reason why. Our brains are wired for self-protection. We pay attention to appearance, body language, voice, speaking style, and other details to determine whether someone seems trustworthy or not. First impressions matter a lot. When something seems off about a person right off the bat, we tend to stay away from them to protect ourselves from potentially getting hurt by them.