know thyself. If proximity distractions are too much, go somewhere else where you can have privacy if you need heightened focus for some block of time - a couch, stay at home, the library, a conf room, etc.
Problem is, many of the places which have the worst types of open plan also seem to be the most allergic to things like working from home and quiet rooms. Also, many people who work in them don't have the luxury of going to a couch or quiet room.