A few times recently I've found myself thinking that diabetes was, in many ways, so much easier when I was a kid. This was partly because my parents did a lot of the thinking, but also because the only times I felt diabetic were at mealtimes, during exercise, and if I felt low between meals.
These days, diabetes seems so much more pervasive in all aspects of life. With a lot of us wearing pumps, testing 8-10x or more per day, and using CGMs, counting carbs and using apps, it's almost impossible to forget about diabetes.
I don't usually feel anxious about diabetes, but it's definitely there in the back of my mind on a near-constant basis. Before I go anywhere or do anything (even if it's just going to a staff meeting) I stop and think, "Is my blood sugar good? Do I have low supplies?" I think it can be hard to get away from this type of thinking. Some days, I really resent it! But the payoff is better control than was possible in the past.
I do have moments where I forget that I have diabetes, mostly when I'm in flow and forget about everything else, too. Some here try to create flow around diabetes itself which I find awesome but haven't achieved.
I think if you are feeling anxiety during a large part of your day, it might be a good idea to talk to your doctor as well as all the other suggestions people have made here. Maybe taking a medication even-short term would help you to get back on track.