Hanging Christmas lights is a difficult task. But here are nine tips from lighting professionals that will make the job a little easier. Simple or extravagant, Christmas lights express welcome Christmas cheer. But hanging Christmas lights tends to bring out, well, let’s just say, not Christmas cheer. If you are an annual do-it-yourselfer, you know how difficult hanging lights can be. You know how much time and patience decorating with lights require. And depending on the height of the peak of that …