How do you stop caring so much about what other people think?

I love to talk to people but when I do I go over my daily interactions and conversations and scrutinize them. I can’t help but over analyze and be overly critical of myself and my interactions. It’s to the point where I’m very “shy” and reclusive. For example, today I was feeling really good and I’ve grown comfortable with a lot of my classmates I was around today, mix that with complete exhaustion and I run my mouth. I kept feeling like people were purposely ignoring me at times though... I’d ask a pertinent question (at least I thought it was) and they’d look at me and ignore me. I also tried to talk about something personal with a close friend that I hang out with and felt ignored by her as well. I noticed yesterday that it was happening too, but teachers were doing it too. Now that it’s night, these thoughts keep running through my head.

I can’t help but think about how I should learn to shut my mouth and not open up so much when my defenses are down... It just keeps running through my head and I can’t help but think about how these people make eye contact with me and then don’t even acknowledge my question or answer to something. I feel like everyone hates me and like I can never say the right thing. I have ADHD and anxiety so that doesn’t help and today I was unmedicated. I’m so tired of putting so much pressure on myself and not feeling like I can open up without pushing people away... How can I work on this or how can I work on keeping quiet in these situations?

Please keep comments helpful, if you just want to be rude then please take it elsewhere. I’m already feeling really low and self conscious... I don’t need to feel worse about myself. Thank you.