My breath exists only in the present, never in the past or in the future.

Living Your Yoga: Sit quietly with your back tall and chest open. Close your eyes and breathe ten long. slow breaths. Note afterward how your mind has settled a bit. Then say to yourself, When I pay attention to my breath, I am always in the present.

Judith Hanson Lasater, Ph.D., P.T.  A Year of Living Your Yoga