Swami Vivekananda's central message was about man's inherent divinity. His famous quote that can be used as a mantra for personality development is "Each soul is potentially divine. The goal is to manifest this Divinity within by controlling nature, external and internal." The document discusses the fourfold functions of the mind - memory, deliberations, determination/decision-making, and 'I' consciousness - and how strengthening willpower can develop one's personality across physical, energy, mental, intellectual, and blissful dimensions by progressing beyond identification with just the physical and exercising higher mental faculties. Personality development involves struggling with and overcoming the lower mind characterized by desires, old habits, wrong tendencies