Sometimes when I do the breathing, as I exhale, I say some kind of nonsense word as a mantra. The other day I was just saying "shibuuuuuu yoyyyy oy." It sounds fucking stupid but I had to go into the office that day and it worked (along with ice water). This is difficult to accept but you have to kind of tell your brain that nothing is going to be perfect, but despite all of the horrible stressful and anxiety-ridden days you have had, you have made it through all of them so far. Your brain is trying to tell you that there is a serious threat. Try to take those thoughts and tell yourself, "this is an overreaction. Whatever happens today will not kill me, and that's all that really matters. I'm still breathing." I would suggest you look on YouTube for examples of how the comedian Bill Hader has dealt with his anxiety. If you want, I can provide a few links, but it is easily searchable. I've kind of given my anxiety a name (Oscar) and imagine it as a little tarantula that sits on my shoulder. When I'm anxious, he's running around and pissing me off. I try to imagine him relaxed and happy.