The G20 countries face multifaceted challenges in their pursuit of the sustainable development goals (SDGs). Progress has plateaued due to global health crises such as the COVID-19 pandemic, geopolitical tensions, and uneven economic growth. It is imperative then to reevaluate the existing strategies aimed at achieving the SDGs. To achieve the SDGs in a timebound manner, this study recommends a shift towards holistic sustainability, integrating the inner dimension of sustainability comprising values, beliefs, attitudes, spiritual and intuitive consciousness, and conscientiousness along with the external dimension that includes environmental, social, and economic factors. The Dayalbagh community in India exemplifies this through the Sigma Six Qualities-Values-Attributes (Q-V-A) model, which embraces responsible production and consumption through six elements: agriculture and dairy, education and healthcare, air quality, water quality, innovation, and human values. The model facilitates the transition towards holistic sustainability that encompasses the principles of Lifestyle for Environment (LiFE). The G20's role is vital in fostering holistic sustainability through a community-centric approach that promotes responsible production and consumption, fosters innovation, advocates sustainable agriculture, prioritises education and healthcare, and enhances community engagement.