Human history has been a journey from 2.5 million years of hunter-gatherer societies to the complexities of modern life. Early humans thrived in small, nomadic tribes with shared resources, fostering strong social bonds and leisure time. The agricultural revolution marked a significant shift, introducing wealth disparity and leading to the rise of villages and cities. Subsequent industrial and digital revolutions transformed society, but modern humans now face unique challenges due to an "evolutionary mismatch" between our ancient biology and contemporary demands, resulting in increased stress and adaptation issues.