You must purge yourself before finding faults in others. When you see a mistake in somebody else, try to find if you are making the same mistake. This is the way to take judgment and to turn it into improvement.
B.K.S. IyengarClassics postures, when practiced with discrimination and awareness, bring the body, mind, and consciousness into a single, harmonious whole.
B.K.S. IyengarWhen you are practicing, do not just do that for the sake of doing. Learn to reflect while you are practising. Make your mind and brain observe and relearn what you are doing. Doing is mechanical; learning is dynamic.
B.K.S. Iyengar