This is also why we often see players take a deep breath before attempting a hard or important shot. That extra oxygen to the brain helps them stay focused. I like to go outside and take five to ten deep breaths and hold it for 7 or 8 seconds before slowly releasing it. I have a special high chair on my deck where I can look out at the hills in the distance. I like to sit in that chair for ten to fifteen minutes in the morning and think about nothing! Just gaze out into the distance, maybe focusing on one hill or even a tree. My neighbor has the most beautiful giant tree in their side yard. Must be well over 100 years old. I love that tree! The most beautiful and spiritual place I know of is the giant redwood forests of Northern California. Walking among them always brings me comfort.
I wish I knew these things when I was a young man playing pool. I know it would have benefited me. I used to say Pool is like Life, to be good at one you need to be good at the other. If you have disruptions in your life it will absolutely affect your pool game. Healthy life equates to a healthy/good player. This little lesson is lost on many current day players.