According to the text, what is the significance of our thoughts, and how can we use them for spiritual growth?

Chapter 19 places great emphasis on the power of thought as a tool for spiritual encouragement and growth. It specifically highlights the early morning hours, when moving from sleep to wakefulness, as a potent time. If a wave of good thoughts arises then, one should 'certainly nurture it.' The text promises that by nourishing such thoughts, one will feel great satisfaction, the intellect will develop, and the mind will become pleasant. The author shares a personal experience of this, describing how the simple, nurtured thought to chant the name of Rama on a Thursday in Shirdi brought peace and a sense of wonder. This demonstrates, as Chapter 19 notes, how Sai gives encouragement to good thoughts without even moving his lips, confirming the value of this internal practice.