I recommended using guided relaxation meditations for clients who have a hard time relaxing enough to fall asleep, or to have something to counter stress for people who don't have time to go to a yoga class or make time to exercise. A guided meditation is something you can do right now! Many are under 10 minutes! You can just put it on and play along if it feels good to do, and then it's over and you're done and maybe you feel a little more manageable, or more ready to fall asleep. Here are some of my favorites:
The MIT Center for Health & Wellness has produced a whole bunch. Some files are just relaxing music, some lead you through a visualization for performance or relaxation, some are gentle yoga or breathing instructions.