Have a big Fight With your Significant Other
I find that having highly stressful fights with my significant other seems to precipitate lucid dreaming. The more distressed I am when I hit the pillow the better.
I would suggest a 30 minute shouting match about 3 am. Set your alarm and, in advance, see if your partner will help you along by playing your foil for about an hour. The key is this, though: it has to end on a sour note and you have to be sleeping on the couch or somewhere else you wouldn't ordinarily be camped, and you must be feeling very upset, worried about where the heck you're going to be living a week from now.
By 5 AM you should begin having a lucid dream.
Hopefully your significant other won't be in it because there's nothing more humiliating than getting kicked out on the street in a lucid dream.
Just a little Fun Hyperbole
Just having a little fun with hyperbole; however, I have noticed that for some reason, when my stress level is high, and for some reason I have awaken around 4 or so in the morning, I almost invariably have a LD an hour or so afterward.
I read on a lucidity website some entries that seem to confirm that making your self wake up early in the morning for about an hour will increase the odds considerably.
I wish I could remember exactly where, but I think it was on www.lucidity.com.
Okay, so maybe the fighting thing is incidental, but stress may come into play; personally, I think lucid dreaming is less an advance in consciousness than a few wires having gotten crossed and a fuse or two having blown.
I would be curious to find the incidence of LD in patients with Post Traumatic Syndrome.
By the way: has anyone else had the experience of lucid sleep walking? If someone's interested, I'll post a description; it was truly unbelievable and felt better physically than anything I've ever experienced!! And the odds of it having occurred were likely near impossible.