If the foundation is firm the building can withstand calamities. The practice of yoga is the foundation so that the self is not shaken under any circumstances.
B.K.S. IyengarYoga cultivates the ways of maintaining a balanced attitude in day-to-day life and endows skill in the performance of one's actions.
B.K.S. IyengarYou must be as joyful when you fail again and again as you are joyful when you succeed. It is often when you fail that you move toward the goal without being aware of it. You must feel joy even when you have not fully succeeded but only moved toward achievement of your goal.
B.K.S. Iyengar