Try this as a meditative practice. Take an oil lamp 
(or a candle) like this in a completely dark room and keep staring at the flame for 10 minutes. Don’t blink and let your eyes water. You can do it before sleep, or you can do it at anytime of the day. You can do it multiple times in a day too, but since you got sleep issue, just do it before bedtime.
If not help you sleep, it will at least calm you down a little more. You’ll see the effects in 2-5 days. Just 10 minutes before bedtime.
And while you do it, don’t listen to music or whatever. Your focus should be on flame itself. Put a timer of 10 minutes and keep staring at flame without anyone or anything disturbing you.