If you want to, you can create coping strategies that are healthier, even if you choose only to use them at work. I had a job that made me soooo emotionally disregulated that I spent most of my time writing in a journal about how much I hated it. That helped calm me down while I was there. I also drank heavily (mostly vodka) during that time. I'd trade one unhealthy comfort for another back then - if I stopped smoking I'd drink more. If I tried to stop drinking I'd binge-eat fast food. If I stopped all those things I go to the mall to stop myself from smoking/eating/drinking and end up spending way too much money. I also used to keep a push-pin at my desk to poke myself since I couldn't cut at work. None of that stuff is really something you can do most places though.

I don't know if you've ever tried DBT but the distress tolerance and emotional regulation tools have worked for me Distress Tolerance I stopped smoking and drinking when I started running because I could really tell a difference in how fast/far I could run when I didn't drink the day before. I just got really in tune with my body and I could notice the fatigue even after just a couple glasses of wine. I also changed jobs and moved across the country. Not the easiest or best solution but that's what worked for me because if you're miserable at your job no amount of distress tolerance is really going to help. Right now I'm trying to give up sugar, I eat too much chocolate when I'm stressed/down. It can be done, it's just tough but it is worth it.