A product that works for me is the Italian "Sedivitax".
http://www.aboca.com/en/our-products/sedivitax
I use that capsules, not the drops. Two capsules of those taken together can take me from the deepest misery/anxiety/depression and highest T spike, after the induced sleep, into a whole different realm. I wake up into a different world, as a different person.
Cannot stress enough how important sleep is for life/health/mood and how destroying the lack of sleep is.
Sedivitax is just an example.
Another one is "Persedon for day" from Slovenia (calming effects without even making you sleepy), but I haven't found a site in English for it.
Or Persen.
Or Sedatifi PC, from Boiron, France
http://www.boiron.be/Produits/Medicaments-homeopathiques/Sedatif-PC.aspx
Look at the ingredients of Sedivitax and i am sure you will find a product in your country that contains them.
The much talked about on this forum Melatonin didn't help me that much, but that is just me. "5-HTP" didn't help me as promptly as Sedivitax either.
What works for one may not work for another, and vice-versa.
You just have to find what helps YOUR nervous system. There is something for you that will work, I am sure, as you are not an alien, with a nervous system so different, that it doesn't respond to any product.
Just try different sedatives that you can find in pharmacies or stores that sell natural meds.
Good luck in searching the best one for you. May you find it after trying just a few of them.