What if you just close your eyes and think of good thoughts? Like saying I’m sorry and I forgive you and saying I love you and please forgive me. Stuff like that.

Get one of them nice hotel baths, as hot as you can handle. See if you can watch something on your phone which will distract you without being too engrossing. I find nature documentaries really help because there's no plot to get hooked on and think about. That can help you get you out of your head.

Take a very warm bath, stretch gently, have a soothing beverage, breath deep, long, relaxing breaths, then get into bed and progressively relax your body from the feet up.

Melatonin helps. Try warm milk. Snuggles help to.

Try chamomile tea