Center Universe

I need to calm down. I need to slow down. I'm not sure when or why I became so amazingly stressed out. This is only at work. Not at home, not around my friends and family. Only at work. That is one of the worst places to have this sort of thing happen. My livelihood depends on my job. And if I have some ADD moment and screw it up, that would be terrible.
I just can't seem to focus, or stay on one task. I have papers that need to be filed from two months ago. That is not from laziness or procrastination, I've actually sit down to file, I just become distracted and start something else, and then become distracted and start something else. So now my desk is covered in papers and scissors and sharpies and index cards, from multiple things I tried to do. See I have a terrible memory so the moment I think of something, I know I need to do it right then or I'll forget, but when that happens multiple times in a half hour span, I have a handful of things I'm trying to do, and then I forget about all of them except the current one.
See where my frustration lies? I teach, and need to be focused and organized, in order to make the best learning experience for my students. I'm just afraid that I'm not doing that.