Anxiety problems

My husband thinks I care about people’s opinions too much.. and I agree but I don’t know what to do about it. I’m overly cautious and anxious being out in public to begin with. And if I say or do something weird out in public I think people are judging me. Anywhere I go I feel all eyes on me and like they’re talking about me, my family, etc. He said it’s making him frustrated. How do I calm down in public