I used to be like you. Caring soooo much about what people thought about me. Had a run-in with the PTA - god it frazzled me emotionally for week, months. The other party?? Probably forgot about it in days.
Have recently had counselling - and lots of stuff re my self-esteem came up. My parents were old-school spare-the-praise type. Good school parents evening - "well why can you not be like that at home?" Good report? THey would pick up the one average or vaguely critical comment and focus on that - never on the good stuff.
So a lot of my (as someone put it upthread) crippling anxiety and my worry about what others thought was down to me, as a child, still, still, trying to get that approval I never got from my parents (even on my wedding day "You'll do I suppose" when I asked how I looked). I didn't care who it came from boys (big flirt as a teenager) bosses (working over and above what was expected of me) anyone. Just worrying about them thinking bad shit. Wanting them not to think bad shit. And a bit of positive feedback was heaven.
So where am I now? Now I have realised I really am not important enough for anyone (of the random "people" anyone) to really think that much about me. They are not my parents. They will barely give me a second thought. IF they do - well it maybe "I like those shoes". "Oh she has straightened her hair today" . "Opps, grey roots are showing." So why, why, why should these nano-second thoughts of random people bother me?
What do I think of other people? "Nice shoes." "Wish my legs were that long." "Oh poor thing has babysick on her shoulder." These thoughts may waft into my head...and waft out again. More often than not they do not even get headspace. I am thinking "Do I need to go to the supermarket, must remember to book the dog into the vets, I wonder where I put the rugby folder, Ooooo bugger, forgot to do the gas meter reading!"
So a long winded way of suggesting you
- Try and work out why other people's opinions are important
- Try and watch what you think about. If you are finding yourself a bit judgy of others - then pull yourself up and stop. Think nice things instead. If you are judgy of others then work out that actually, even the odd bichy thought doesn't really (I hope) shape how you think about someone in reality
- Accept you really are not that important to them.
Then you may find your anxiety does drop. You will start to not worry about what other people think. And if they are thinking nasty things about you - well that says wayyyy more about them than it does about you.
And then, you may get to the point you do not worry.