The glass of the lampshade above my head is broken. Feng Shui

It is a natural thing and should not be associated with good or bad luck. Otherwise, you may be asking for trouble. Plastic products often age and crack naturally. How can there be good or bad luck in them? Right? It's just the broken lampshade that falls down that makes people jump. It's over, it's over. Once you clean it up, it'll be fine. Just replace it with a glass one to prevent scary cracks.