Cool thing is you love your job, which can only mean your anxiety is not "at" your job but it is just being carried over because your nerves are just real tender right now. Staying at work and being focused on your work while at work is mega important in controlling what is controlling you, the anxiety. Going to work is like making yourself fly on an airplane, set in a traffic jam, ride in an elevator etc., until we face it, walk through it, again again and again, we just never really get any better. Its tough - I know.
While your at work and you begin to feel anxious ask yourslef "what am I thinking about right this moment that is causing me anxiety"...then write it down. You may find a pattern of things not even related to work but you will certainly find a patern of thinking negetive, low self esteem producing, self judging thoughts, judging in general thoughts. Its gotcha cornered and your ready to back out of that corner which is so powerful.
Go back to work tomorrow and work the whole day, give yourself praise you got through it, buy yourself an ice cream on the way home to celebrate, set a goal that you will work the whole week and when Friday comes buy yourself a new outfit for your triumph. But no matter what stay at work! Best to you, I know its tough, you can do it.
RB