Acharya Prashant explains that when one's work is driven by self-interest, ambition, or the desire for personal gain, the energy for such actions comes from the ego. While this self-centric energy can help one achieve worldly success, such as financial stability or social status, it is insufficient for the path of self-transformation or spiritual progress. He emphasizes that the energy required for a broader mission must come from a center of compassion rather than ambition. This compassion arises from a deep sensitivity to the suffering and ignorance prevalent in the world, rather than a desire for personal betterment or inner satisfaction.