When you see a mistake in somebody else, try to find if you are making the same mistake.
B.K.S. IyengarLife means to be living.Problems will always be there. When they arise navigate through them with yoga- don't take a break.
B.K.S. IyengarYes, flexibility of body and physical perfection for Yogasana is important. However more important is the state of your mind, Meditative mind. Your flexibility might be excellent but if your mind is not attentive, you are merely doing some physical exercise, not Yoga.
B.K.S. Iyengar