I had a couple of lucid dreams a few years ago, and I've been fascinated with them ever since - though I've only managed to have two or three since then. What really fascinates me about them is the possibility that you could do psychological work through lucid dreams. For example, if you're the kind of person who, through social conditioning, always expects things to fail, you could reprogramme your subconscious mind through your lucid dreams. You could actually dream that things turn out a certain way, and maybe that would improve your mindset.