Since I happen to be that friend, (your welcome )-I am aware of a few habbits that in particular may cause some problems with LD's. Because of our job & your irregular sleep patterns (+ a lot of video games)I think this may be playing a big role. Also once you get it in your head that it is a problem it only manifests into a greater one.
If Tjhands is correct about stress creating more lucid dreams then illucid would be lecturing all of us on the subject.
O ya lay of the beer at night