Acharya Prashant explains that the core of Shri Krishna's philosophy is desirelessness, which means being unaffected by worldly affairs and focusing solely on the ultimate truth. He clarifies that the term 'Guru' specifically refers to one who can dispel the inner darkness of the 'I-sense'—the ego that identifies with the body, possessions, and relationships. While professionals like doctors, financial advisors, or fitness instructors perform useful roles in society, calling them 'Gurus' is a misuse of the term. A true Guru's only concern is the liberation of the 'I' from its attachments and false dependencies, rather than helping it become more proficient in worldly acquisitions.