Dear Travelinglady,
As someone who also struggles with sleep problems, my heart goes out to you. I have found that cutting down on salt and increasing my intake of potassium helps me. I read somewhere that sodium stimulates wakefulness in the brain. Since cutting down on salt and increasing my consumption of potassium rich foods, I am experiencing less sleep problems. Perhaps this is just a placebo effect though. I don't know. Hopefully you will find something that helps you!
Sincerely yours, Yao Wen