I try to be kind, upbeat, etc in my interactions with other people, especially at work. I want to treat others well, work together peacefully, and leave the project happy. I’ve noticed that some people (particularly more curmudgeonly folks) seem to read that attitude as naïveté, and feel like they can walk all over me or treat me like I don’t know what I’m talking about. Why is that?
You cannot control other people. And as I said, bouandry setting with others is a case by case situation. The next step would be to limit your interaction with them - this could be from changing your routine to something more drastic like changing jobs/going no contact.