Where do your characters go when they feel the need to get away from it all? What makes them feel as if they have got to get away at all? What pressures are they facing (especially those they've never faced before)? Does the break refresh and help them or make them feel worse, knowing they've got to come back and face whatever it is they're taking a break from?
To a certain extent we need to get away from our stories in that we need to put them aside for a while before coming back to them and re-reading them with fresh eyes. Doing this helps you to read the story as a reader and it can be amazing what flaws you then spot. Another good thing about this is you also spot what was good about the story (particularly useful if you were feeling it was rubbish - it almost certainly isn't but will need work). That can help reignite the spark which led you to create the story in the first place.