Acharya Prashant explains the relevance of Swami Vivekananda's teachings, highlighting the stark contrast between India's rich spiritual heritage and its poor condition 100-200 years ago. He notes that while India has a long tradition of enlightened beings and profound spiritual literature, the country was plagued by weakness, disease, cowardice, and superstition. The ultimate purpose of spiritual teaching is the beauty and strength of life, yet strength seemed to have vanished from the lives of people who, despite their religious practices, lived in ugliness and poverty. Swami Vivekananda's unique contribution was to bridge the gap between spiritual words and lived reality. His revolutionary message, "Strength is life, weakness is death," infused new life into a dilapidated India. He challenged the traditional notion of spirituality being for old age, asserting that the highest work of life must be done in one's youth, with full energy. Vivekananda lived as a fiercely burning torch, not aiming for a long life but for an intense one, believing that one should accomplish their life's work by the age of 25-30. This is why celebrating his birthday as National Youth Day is fitting. Acharya Prashant further explains that Vivekananda redefined the image of a sanyasi from a weak, begging old man to a figure of strength and action. He taught that the body is not to be neglected but to be kept healthy and strong as a tool for work. It is a temporary, rented house that should be well-maintained for its purpose and then left with a smile when the time comes. Vivekananda's spirituality was practical; he urged the youth to engage in social service, clean their surroundings, and fight against all that holds them back. If one has received knowledge, it must be followed by a mission. This active, powerful, and youthful spirituality is the true essence of Swami Vivekananda's teachings.