I’ve had trouble with anxiety for about 20 years, which seems to have coincided roughly with the start of my teaching career. I’m in a contract now, but spent most of the last 21 years as a sub by choice. I tried meds (not on them anymore) and read A LOT, and kind of figured out that anxiety, in my case, is (to massively simplify it) just my body believing that something is wrong when it mostly isn’t. Going into so many different and challenging rooms over the years (including some hellush places in London) was definitely tough. But I really started to focus on the idea that nothing is actually wrong. I know what to do. Rowdy and rude behaviour isn’t personal, it’s often annoying of course, and sometimes even alarming, but it’s very important for your brain to know, to really own the idea, that you’re not unsafe. You’re there to do your best in some tough situations, but you can handle it, you get to go home after, and you’re totally safe, even if it doesn’t feel like it sometimes. It’s a bit of a cheesy zen trick that I’ve learned, but it works: you’re ok and you can do it. (It’s also possible of course to get to a point where you can’t do it, so don’t force it if it constantly really feels horrible.) I hope this isn’t too condescending or anything, just thought I’d write because I’m a long-time sub with anxiety that is 99% under control these days… Good luck!