When everything feels like it’s ‘too ----’. Stop and take a deep breath -- in through your nose and slowly out through your mouth. Repeat up to a total of three times. Don’t do more, it will cause you to hyperventilate and possibly pass-out. Neither is helpful to the situation. A few deep breaths will give your mind a moment to find calm. It will have a soothing effect on your blood pressure/heart rate. And will stall things long enough for you to have a thought or two. Then, proceed to the next step...