I had terrible insomnia while drinking and for a couple months after. I cant tell you exactly when it changed, but it was shortly after my 5th step. Call it a coincidence if you wish, but I know what it really was. My conscience was at rest for the first time in a long time. I sleep like a baby now and still am so grateful for that. I hope you can get some help with this because I can feel your pain. 8 hours is a long time when you are lying awake at night.