[EricH]

I don't work in a cubicle, but my job does get pretty repetitive, something on the lines of "Gas right, brake left, no bumping, stop at the red light, GO!" all shift, with reminder hollers at odd intervals and the occasional radio call. No headphones or books or games or things like that are allowed when you're on shift (and no, I'm not on shift right now). Or else you're shooting the breeze with co-workers for a while until a manager asks if anybody wants to go home, or until customers show up...

What's been suggested to help break the routine is a (warped) sense of humor. Find the humor somewhere, whether it's Monty Python or some wisecrack somebody makes, and that may help.