I push through my day by staying busy. I concentrate on my work and take one task at a time. If I get overwhelmed, I take an early lunch or I take a break to walk around the office or the parking lot to clear my head.
I do forget stuff a lot and I'm really bad at taking notes so I'm working on that atm.
It's really not the BP that causes an issue it's my ADD more than anything. So what I do is force myself (with the help of adderall) to work 30 mins and then take 5 mins off. Or during tax season I work until I finish a tax return and then take a small break before picking up another one. It's hard to stay on task, but knowing I'll get a break when I do helps a lot. And as long as my boss can see that I'm making progress he really doesn't care how many small breaks I take.
Other than that, I don't really have any other coping skills in my tool belt. Hopefully it all works out for you.