Hi Timothy,
Sorry to hear about your insomnia. I too suffer from it, with my longest stretch of sleeplessness lasting a full 14 days! I can comment a little bit about practice, but not really about any drug/pharmaceutical/chemical/supplement/etc., even if is totally natural.
I had to go to a couple of different doctors to get my insomnia under control. What eventually did it was working on my morning wake-up routine and focusing less on my nighttime routine. At one point it seemed like nothing could sedate me enough to actually put me to sleep. What my current (I think brilliant) sleep doctor did was get me properly woken up in the morning, every morning at the same time every day—no sleeping in! That combined with my nighttime routine eventually restructured my sleeping schedule so that I had a normal wakeful part of the day and a normal “shutting down” part of the day. My practice was to reinforce both of these parts every day. It didn’t happen immediately, but over time my sleep radically improved and now I sleep mostly normally.
As others have mentioned, I am not thrilled with melatonin. I tried it for some time hoping it would work, but all it did was make me groggy but unable to sleep. And in the morning, I woke up and stayed groggy for hours. Also, as has already been mentioned, too much melatonin can downregulate in your brain. And if that weren’t enough, too much, even in the amounts available over the counter can have some undesirable side effects that are not mentioned anywhere on the packaging. If you are curious about those, I can go further.
In the end, I don’t know or even care what sedates you (makes you tired and want to go to sleep), but whatever you use, remember the importance of maintaining your sleep structure—getting to sleep is only one part, waking up is just as important.
I know that some of this might sound a little vague, but if you have any questions or need clarification, just ask.
Good luck,
Eric