I tend to have insomnea and usually have a hard time falling asleep when I'm by myself. The only way I've managed to help it is to put on a very familiar movie, turn the volume down to the point where I can hear it and just barely make out the words..I find my brain focuses on trying to listen to what they're saying instead of running nonstop overthinking things. It actually has helped me go from taking 3 hours to fall asleep, to less than a half hour.