Regarding perfection, that's a very difficult question. I can say that I have superseded most in my sadhana [practice]. I am in it, and my mind and my intelligence gets better in my sadhana, and it reaches a certain place. When I stretch, I stretch in such a way that my awareness moves, and a gate of awareness finally opens... My body is a laboratory, you can say. I don't stretch my body as if it is an object. I do yoga from the self towards the body, not the other way around.
B.K.S. IyengarPersistent practice alone is the key to yoga. As you take pains to learn, continue with devotion what you have learn.
B.K.S. IyengarBy drawing our senses of perception inward, we are able to experience the control, silence, and quietness of the mind.
B.K.S. Iyengar