Try relaxing imagery for seven weeks, daily. Get in a comfortable position. Look at a spot on the ceiling. Hold your breath for a count of six, let it out slowly. Close your eyes. Mentally go through your body, head to toe, relaxing each part. Then imagine sinking lower and lower, on a cloud (count from 1 to 20, letting go more each time). Then imagine entering a bare room, feel the floor with your bare feet. Imagine the walls, their color, imagine a door and what it looks like. Walk to the door. Stand in front of it. Then open it to a special place, beach, forest, boat, cabin, and make that scene come alive in your mind. Birds, water, sunshine, whatever. Then when you are ready, come out of it counting from 20 to 1, and then think "wide awake." Don't do it when you are sleepy (you may dose off and you will lose its value. This is an outline of what a psychologist did for me, and then I did it for myself. It should take 15-20 minutes, but less time is fine too. After seven weeks it will be habitualized and you can recall that relaxed state quite easily when you need it. If you are like me, you may need to do the whole routine too. And if you are lucky, there may be an app that does something similar.