I'm extra nice to strangers and polite. For example when I text someone I write polite paragraphs with please, thank you etc. and they often respond with short things such as 'okay' and I get that they're probably busy but it makes me feel like I never want to ever be nice to someone again. 

I know this stems from my paranoia that I'm being judged so I try to be as nice as possible to avoid any possibility of judgement but still curious if it happens to anyone else.