I actaully think it takes a very strong will to auto initiate Lucid Dreaming, what I kinda like to call it. Shadow seems to be very good at doing that. For me and I really think for alot of other people also I think it's depends on other things out of our control. I think anyone can achieve Lucid dreaming at will every night if they try hard enough to focuse on doing it. But I think other things plays a very significant role in rather or not we have it on one night rather than another night. As a matter of fact I'll create a thread on it.