Hello! Sorry you're not sleeping! Sleeping is awesome!
I read someone awhile ago that a common reason for insomnia is actually a guilty conscience! It doesn't mean you did something horrible, but rather something you didn't do that was minor (laundry, dishes, that walk you said you'd go on, etc.). Really think about the LITTLE things that are well within your control to accomplish that you may be neglecting.

Also, dog train, condition, whatever you want to call it to be PRODUCTIVE while not sleeping. Cook. Clean. Study. Exercise. Whatever. As soon as you start being productive you'll "trick" yourself into feeling like you've earned sleep. Also, if you're going to lay awake at night, what's the point of just sitting there like a blob? If you're going to be tired you might as well have a clean house with a tight body to show for it!

I always did this when I went through fits of insomnia and it'd last a month or two then I'd regulate. Not to mention all the stuff I had to show for it!