Vicki Robin is an American author and speaker best known for her work on sustainable living and personal finance. She co-authored the influential book, Your Money or Your Life, which encourages readers to rethink their relationship with money and prioritize their values over consumerism. In addition to her writing, Robin is a prominent advocate for the voluntary simplicity movement, which promotes a lifestyle focused on reducing consumption and enhancing personal fulfillment. Through her workshops and talks, she inspires individuals to live more intentionally and sustainably.