Based on Bhagavad Gita Chapter 18, Text 71
When a doctor writes a prescription, those words are meant to change the patient by curing the disease. But if the patient changes the words of the prescription as per one’s own convenience, then they lose the power to heal.
The Bhagavad-gita’s words are like a doctor’s prescription. They can cure the disease afflicting our heart — the disease of misdirected desires, wherein we love temporary worldly things instead of the eternal Lord of our heart, Krishna.
The Gita’s words are not just the prescription but also a part of the medicine. Hearing the message of Krishna is itself a central limb of devotional service, the process that cures our heart disease. The Bhagavad-gita (18.71) indicates that those who hear the Gita faithfully become purified and elevated.
How does this happen?
The Gita’s words reveal Krishna’s unfailing, unflinching love for us. If we hear those words faithfully, we naturally feel attracted to reciprocate love with the Lord who loves us so much.