From ancient cave handprints to modern smartphone snapshots, this comprehensive exploration traces humanity's enduring desire to document ourselves across time. The article reveals how self-portraiture evolved from Renaissance masters through the photographic revolution, ultimately transforming into today's global selfie phenomenon. Written for both history enthusiasts and digital culture observers, this in-depth analysis examines the technological, social, and cultural forces that shaped how we capture and share images of ourselves. The piece concludes by looking at how artificial intelligence, augmented reality, and social media continue to revolutionize self-documentation in the modern age.