Dr Bostock says: “Separate day from night by allowing yourself to switch off and relax in the last hour before bed. Switch your phone off, dim the lights and do something you enjoy. This could just be quality time with loved ones, listening to music, reading a book, meditation, breathing exercises.. whatever it takes to help you feel calm, relaxed and safe.”
Article source: https://www.huffingtonpost.co.uk/entry/good-night-sleep-method-science_uk_636b83f4e4b03438613e942d