Feng Shui is "a system of laws considered to govern spatial arrangement and orientation in relation to the flow of energy." It basically consists of moving around your furniture in order to make yourself happier and more productive. While some people don't believe in it, others think that it's a useful way to live a life you love. Here's the beginner's guide to feng shui:
Don't let your bed face directly toward the door, because your feet shouldn't be pointed toward the exit. However, your bed should give you a good view of your door (which works best if it's diagonally opposite to it), so that you can see who enters and leaves it. You also need to have your head against something stable, like a wall. Of course, having a headboard can never hurt.