It's amazing what you can accomplish by some simple deep breathing exercises. I do this when confronted with a irritating or stressful situation. Sit back in your chair, your feet planted firmly on the ground. Close your eyes. Breathe in deeply for 4 seconds through your nose, and out 4 seconds through your mouth. Imagine those negative thoughts flowing down through your body, through your feet and into the floor. I do this several times a day...in line at the grocery store, stuck in traffic.