Time really is the best medicine.
Exercise has helped me tremendously - I'm doing two-a-days though (aerobic workout in the AM and weight lifting in the PM).
Try to stay away from anything that might get you fired up before bed. For example the other night I was up late searching for jobs and had a real hard time falling asleep. It wasn't until this was pointed out to me that I saw the correlation. So now it's "easy does it" 2-3 hours before bed.
I also started using this homeopathic spray that my gf told me about. It's got some kind of spearmint/eucalyptus blend that really works better than I thought it would (I was always under the impression that stuff was for witch doctors and circus midgets - but I signed up!
)
I've tried melatonin (3mg I think) and it made me feel very strange the next day so I don't take it. I have heard people use it with success though.
Congrats on Day 6!