Pain and pleasure are the two sides of the same coin. One cannot be understood without the other. Baba explains here, how important pain is in one's spiritual development. Even in Bhagavad gita, the first chapter is called Vishidha yoga, the Yoga of despondence. Arjuna a representation of a common man desirous of peace, and embarking on the spiritual quest, wails before the Lord in agony. Thus, here Baba explains that, treat pain as your friend as it is the best teacher in life.