Otherwise, please come by during most of the rest of the week, when I really do have an open-door policy." I trust that if you try this for one month you'll never stop. You'll be amazed at how ...

Yes, it is perfectly polite to close the door when you need privacy. All you have to do is go to the door, say, “Excuse me, I’m going to close the door for a little while now,” and do so.

That’s barely enough time to wake up, react, and get out. The solution is easy: close your bedroom door before going to sleep ...