It realy is terrible when even things that might otherwise be considered a normal part of your occupation start to cause more and more worry, to the point where anxiety takes over your body and your thinking. Sure not everything goes right in any job, and having the expectation that there will always be glitches is the way many people handle it.
The problem came, at least for me, in wanting everything to work, for all efforts to result in perfection, for there to be no glitches.
This false expectation can be something the organisation you are with expects, or can come from inside yourself. In my case it came from inside me, and resulted in the sort of bodily symptoms, mind constantly worrying and lack of sleep.
A bit of a vicious circle, as the more tired I became and the less my concentration the more things went wrong -a no win situation. I became less and less willing to take things on.
This situation was not something I could not improve for myself, I simply kept on getting worse. Eventually I did seek proper medical help, not just for the physical symptoms, but for my thinking too. Admittedly this was part of a larger picture but one of the things I had was an anxiety condition.
Under the correct regime of medications and therapy I improved out of sight -not quickly but eventually I reached a stage where everything was manageable and it is only on rare occasions that this set of negative emotions takes hold.
Even now I have a set of things I can try to reduce that. They range from exercise to reading to the free smartphone app Smiling Mind to ..
I know your things will be different.
You might get some ideas from the thread
which is LONG but is packed with ideas, some of which I've adopted.
I did try avoiding those situations where I thought it was likely I'd react badly, sadly that did not realy help, not only did my job require them, but if I did omit them I found that then I'd simply worry more about something else -like the mind had a built in quota of worry to get though every day.
May I suggest you see your GP in a long consultation and give all the details of how things are for you - it is a good first step
I hope to talk with you some more