When I try and go to sleep, or try a technique which requires "passing out" or falling into your dream from the waking state, I constantly have something going in my head like a song. Sometimes I get it to end, but I "improvise something" which goes continuously. I also have my "voice" in my head talking. If I try not too think, that's what's going in my head: "I'm trying to not think...dangit!". It's really bothering, anyone know a good solution?