For the past few days, which I have been reading, trying, doing stuff about lucid dreaming. I have been having a hard time getting to sleep, and I have found myself waking up about 3 times each night, often closely after I first fall to sleep. Normally I can just jump to bed, and I'll fall asleep within a minute, while my mind is totally clear of thoughts, seems like I have developed a sleeping disorder or something. What could be the reason for this?