The first practice is the practice of undiscriminating virtue: take care of those who are deserving; also, and equally, take care of those who are not. When you extend your virtue in all directions without discriminating, you feet are firmly planted on the path that returns to the Tao.
Krishnamacharya's personal practice was always with long deep breathing and mental focus. Observe the position of his head, the lower abdomen and his mental focus. He was always concentrated on the inner alignment through breath.
Breathing is important in the practice of meditation because it is the faculty in us that is simultaneously voluntary and involuntary. You can feel that you are breathing, and equally you can feel that it is breathing you. So it is a sort of bridge between the voluntary world and the involuntary world — a place where they are one.
When you are discontent, you always want more, more, more. Your desire can never be satisfied. But when you practice contentment, you can say to yourself, 'Oh yes - I already have everything that I really need.'
The nature of the mind is such that if certain mental qualities are developed on a sound basis, they not only remain, but they also increase. In fact, once properly developed, the mind's good qualities eventually increase indefinitely. Therefore spiritual practice brings us long-term happiness and inner strength.