I am having hyper vigilance issue in my daily life

I self diagnose myself of having hyper vigilance, maybe as a result of having psychological trauma in the past. It is a condition where I can't really trust other human being. Often perceiving other human being around me as a threat. I am completely relax near animals or very-close person. My condition is not severed, only fired up if certain condition arise. For example when speaking to new business acquaintance, I am in alert condition frantically trying to gather and analyze as much information as possible before giving out comment or response. Somehow I have feeling that I will be doomed if I didn't give a perfect response. what kind of buddhist teaching that can ease this symptom?