It is hard.

I make a lot of mistakes too and have panic attacks over it. But, over time it has gotten better. The best thing is to learn your job and feel like you know what you're doing. That will help a ton.

As for people, I've come to the opinion that if people like me then fine. If not, then oh well. And, when I feel like everyone is out to get me, then it's time to slow down and take a break. I have a lot of problems of paranoia about people like that. Best thing is to be nice but not over sharing and just smile at everyone and do your work. Then what can they really get you on? Nothing.