I've been very open with people about my psychosis and other than psych nurses I haven't had stigma from friends,dates, coworkers or even my boss. The mental health professionals are actually the worst....unfortunately what they've shown so that for psychosis increased knowledge ie being a doctor with more training actually leads to more stigma not less. I think it helps if you yourself don't consider it a thing and you explain simply rather than using clinical terms...ie sometimes I hear voices...usually they find it fascinating and want to know more about what it's like.