Swami Mukundananda
How does self-discipline develop, as in a baby who learns to cope alone?
Self-discipline grows like a muscle
A baby left crying, seen on a video cam, stopped crying after some time and started speaking to herself. She had learned to handle the situation, and self-discipline had developed, like muscles that grow stronger when exercised.
Self-discipline had developed. It is like muscles: you exercise them and they grow stronger. She faced a situation and learned to cope with it.