>started to choose different words that are easier to pronounce in order to avoid embarrassing myself Common tactic of avoidance, but obviously not necessarily a good one. Probably better to stick closely to the originally intended choice of words. Not that communication never includes changes like this, but for the sake of our mental health, it's something to be wary of. >other insecurities (like eye contact) Yeah, this one is common too. I've been working for years to try and maintain eye contact without it getting awkward. It can be done, trust me, but it's a really hard habitual behavior to kick. >feel tired in general Not quite sure what you mean here, but if it's e.g. depression symptoms you're exhibiting, you should go visit a medical professional.