I have a tendency toward hamster-head, a condition in which the small animal that is my brain runs constantly in a circle, never quite getting anywhere, but unable to stop. I am pretty sure I am not the only one.
So far, the best strategy for getting my hamster under control is hamster-body, otherwise known as exercise. Getting good and breathless improves mood and focus. It promotes healthy sleep. Also, when all I can think about is how much my thighs burn on the five millionth squat, I have no choice but to stay in the present moment.
A tired hamster is a good hamster.