I'd agree with so many of these responses! I had trouble pumping, and developed the following routine.
I'd eat chocolate at my desk (or crouched over next to the toilet at the Reagan Building, ARG) wrapped in a shawl looking at pictures of my baby OR reading People magazine.
So now I send pumping moms that care package--chocolate, shawl, magazines. Also a water bottle. I was thirsty as hell.