This is a little off script but are you open to a new way of treating your insomnia? I understand where you are coming from. I used to describe myself as the Tansmanian Devil because I never stopped and sleep was beyond impossible.
I stumbled across a wonderful device called an Alpha-STIM that you use for 60 minutes at a time and it increases alpha waves (the calming waves). I was pleasantly surpisred after my first 60 minute session that my sleep improved. I started out renting the device then bought my own.
I really think it is worth checking out as it is a non medication way of calming yourself
and there are no side effects.