Evan,
42 days, huh? That is fucking awesome! I don't recall when my sleep returned to normal...but it did. Quit thinking about it...impossible, I know. Keddy is right about excercise. It helps.
Ambien, really? Pills and patches are for pussies. Short cuts and tricks are bullshit. The only way out is to gut up and quit. Embrace the pain. I used sit in my truck and shout "I GET to feel like shit because I CHOSE to QUIT!"
You have to have fun with quitting. Learn to enjoy it. It is the feeling of freedom. Sleeplessness won't kill you...but don't just lay there in bed getting frustrated (or popping Ambien). Go for a walk. Log on to this site. Do busy work or clean the house. When you quit "trying" to sleep, you will sleep. And, if you're like me, you'll be all caught up on your laudry and will have finally organized your hand-tools in the garage. The, pretty soon, you're entering the HOF...still fighting addiction, but sleeping easy (unless you're still popping Ambien...there may be a site for that, too 'crackup' ).