Using the narrator's experience, how does one cultivate a state of constant contemplation on the Guru?

The narrator's experience in Chapter 19 provides a model for achieving constant contemplation. After dedicating twelve years to his Guru, the disciple reached a state of profound absorption. He explains, "I would gaze at my Guru's face with love day and night; I felt neither hunger nor thirst; without the Guru, my mind was restless." This state was achieved through immense love and devotion, where the Guru's face became the sole object of meditation. The text states, "There was no meditation without him, no other goal; he was my only constant contemplation." This implies that the practice involves cultivating such a deep love and focus that all other worldly concerns, even basic physical needs, fade into the background, leaving only the joyful presence of the Guru in one's awareness.