This chapter reports on 8 years of longevity activism in Slovenia to advance the cause of fighting biological aging and greatly extending healthy life. The content ranges from the founding of the Society for Vital Life Extension of Slovenia to a description of the state of the field of longevity in Slovenia and a detailed sociological study describing this field. In a mix of personal narratives and empirical research, the author shares his experiences from volunteer-led projects in the field and presents the results of a sociological survey of 768 Slovenian adults on public attitudes towards longevity technologies and ageism. The survey results indicate a broad public openness towards life-extending biomedical technologies—over 80% of respondents in Slovenia are willing to use longevity therapies and have low ageist prejudice. The chronological and thematic report highlights good practices in volunteer leadership, cooperation with scientists and public institutions, and public communication. By explaining these experiences, the chapter identifies good practices for longevity advocacy and provides a valuable case study for researchers and activists, showing how grassroots, evidence-based activism can achieve results and advance the idea of longevity among the general public.