Breathing
During times of stress or anxiety, it can be helpful to focus on your breathing. By paying attention to your inhales and exhales, your mind gets anchored in the present moment and is less distracted by whatever it is that is causing you distress.
Techniques
Mindful Breathing - This 15 minute exercise is "a way to build resilience to stress, anxiety, and anger."
RELAX AND BREATHE: Do Nothing for 10 Minutes
Mindful Breathing Exercise