Ghost in my Apartment

In my dream, I saw some kind of ghost or spirit in my living room. I remember walking out of my bedroom knowing there was a spirit in the room, right near the small couch and coffee table. Suddenly, I was turned around, looking back into my bedroom, and the spirit was between my bed and the wall, about 3 feet to the left of the window that looks out onto the lanai. It was black and/or dark, and it looked tall and thin, but was shapeless, like a wall of dark mist. It moved very slightly, as if an extremely gentle breeze was blowing through it, but in slow motion.

I said to it "I know you're here. I pray that you leave peacefully. I hope this is okay." I also remember thinking of that episode of Sex and the City in which Miranda has a ghost and Samantha tells her to deal with it by acknowledging its presence, then asking it to leave. Glad to know I take my advice from that show...

After that, the spirit wasn't there anymore, but I was nervous to go back to sleep in my dream.