This has been happening to me a lot in the past few days. I'll be dreaming, and some piont during them I realize that I'm dreaming, but as I start to become lucid, and think about what I'm going to do in my LD. It's like everything just turns black, I don't even have a chance to save the dream from fading away....it's just sudden darkness. I once had a lucid dream before, and that didn't happen. My guess would be that I'm too eager, so the dream just stops. Could that be the cause of it? Is there a technique that could prevent that from happening.