Yoga Sutras of Patanjali

A favorite interpretation of ours is Yoga Sutras of Patanjali by Mukunda Stiles.  Sutra II.47 states that "Yoga pose is mastered by relaxation of effort, lessening the tendency for restless breathing, and promoting an identification of oneself as living within the infinite breath of life."  Use this Sutra as the intention of your practice and be mindful that no matter what happens outside of you, you are part of this infinite breath and wisdom of the universe.