I am an auditor with ADD. Welcome to my world!
I live in a small cubicle farm at work. And, like you, literally EVERYTHING is a distraction.
First, talk to your boss about moving you to a corner or facing your desk to the least distracting view. I moved from a high traffic area to another cube against the back wall.
Second, how about noise cancelling headphones? Or what I use, stereo headphone connected to a cd/radio. I like classical music so it is a really good excuse to splurge on myself. I actually tried a white noise machine but that only cancelled some of the noise. A help but. . .
It’s been six month and it has been pretty good. Now if I could just get that smelly woman to take a shower now and then, I would be in cubicle heaven.
I hope this helps.