A relaxation technique that can put you into a deeper state relaxtion-
the way this technique works is, you trick your mind into thinking that you are more sleepy. after you lie down, open your eyes about halfway and think something like "Man, it's getting hard to keep my eyes open." (maybe throw in a fake yawn too) then sort-of close your eyes a little more and shoot them open to where they just were (as if you were studying for a test late at night the night before the test and kept closing your eyes.) after a minute or two, this should make you feel a lot more tired.

-cidus

EDIT: I haven't used this to LD yet, but I have used it to get me more relaxed in cars and on nights when I can't sleep.