stuck, and switching gears

The WiP I've got going at the moment has reached a tricky part and I'm stuck. I tried staring at the page for an hour or so the other day (and distracting myself by picking apart a few sentences here and there) and after the futile effort, realized I might need to let it sit for a while before attacking this story again. So, I'm contemplating my next effort. A change of WiP may be just the thing to recharge the batteries!