Meditation has done wonders for me in terms of relaxation and breath control. I was the biggest skeptic, but some time ago attended some meditation classes, learned how to do it, and have come back to it now, which helps with the COPD. Believe me, no bigger skeptic was there than I. But no more
For those who already are practiced at meditation, try the Insight Timer app on your phone -- it's WONDERFUL, free, let's you pick from a variety of meditations, and with headphones, it's even better. Love it! As do thousands of other people around the world.
For those of you who are new to meditation, find a class or a teacher nearby, get some meditation skills, and you can use Insight Timer later on.
Give it a try!