Even during rough, frightening and traumatic times, getting even a little bit of pleasure makes a positive difference. If you enjoy music, then listen to music. If you like a cup of hot coffee, then drink a cup. If you love reading, then read something. You are sure to find that if you do something pleasurable once a day, even in the face of a horrific natural disaster, that your day will be a bit better and you may be able to sleep a bit better.
Sleep Tip #231: Get Some Pleasure.