Here is my son's own invention. Works for me. Use it fall asleep or sleep interrupted. Stay in your bed. None of this going to another room and read—problem with that is you are waking yourself up even more. Here it is: Slowly take deep breath through your nose until lungs are full (about count of 6)Then hold breath for 3 seconds. Then exhale thru your mouth. Exhale fully and slowly. Now start to count down from 100 to zero.[ I have never gotten to 20] One complete cycle: Deep breathe, Hold 3 seconds. Fully exhale. Then count. If your mind wanders or you lose count, start over again at 100.