It's been a busy day, so I'll say that after that the main thing that helped me was finally accepting I have issues with anxiety and doing something about it. Things that most people would consider small get blown out of proportion in my head (or can). And many small things become insurmountable to me, or excessively frustrating. Cognitive behavioral therapy, in particular, helped me a lot with dealing with it. I still have anxiety issues, but now I see it coming and react in better and more effective ways than becoming burnt out, frustrated, depressed, toxic, or whatever else I had done prior to that.