I agree with what gab said. I also mostly do affirmative RCs, where I ask myself if this could be a dream and always answer, yes, I might be dreaming right now. So I look around and pretend that it is really a dream. Another thing you might find useful is to double RC. Look at your hands and ok, maybe you have 7 fingers, then stare at a digital clock or anything written and read it out loud, then look back and see if it changes. Usually it will, perhaps that realization will be enough to lead you into lucidity. Good luck!