I remember reading years ago that if you want to be chilled out, do Pranayama. So I tried. It was the first thing that helped me chill out my mind at a time of great difficulty. The one that worked the best for me is where you breathe in 3 times with a tiny hold between breaths and without breathing out in between. So each breath takes you a little deeper. I forget what it is called, but wow, life changing.