Right before and after a show, a week before spring break and my college finals...there is always that one corner of the room that explodes. I just pretend I can't see it until I cant take it anymore!
So just relax and realize it will happen no matter how hard you try. Just don't get use to it and allow it to take over your room and your life. A few days is fine even a couple of weeks if you are under pressure but don't allow it to consume your room.