inhale, exhale, repeat
Even if it's only for 5 seconds.... Stop whatever you are doing.
Inhale, deeply and fully.
Exhale and release all of your worries, doubts, stress, anger, tension, sadness, guilt, ego, and self-doubt.
Inhale and fill your lungs with the nectar of the Universe. Breathe in love, happiness, gratitude, confidence, and compassion.
Revel in the fact that you are you, and smile.