Observe the reality as it is. As it is, not as you wish it to be. Perhaps your breath is deep. Perhaps your breath is shallow. Perhaps you breathed in through the left nostril. Perhaps you breathed in through the right nostril. It makes no difference.
It was a miserable machine, an inefficient machine, she thought, the human apparatus for painting or for feeling; it always broke down at the critical moment; heroically, one must force it on.