Martin Seligman, widely recognized as the founder of positive psychology, delves into the concept of human agency in his latest work, exploring its influence on individual lives and societal advancement. Agency, defined as the belief that one can influence their own future, is presented as a crucial driving force for human progress and survival.

Seligman, known for his research on happiness, optimism, and well-being, emphasizes that his perspective is grounded in scientific data rather than self-help rhetoric. He posits that individuals can take control of their lives through what he describes as "mental toughness." This approach counters his own natural depressive tendencies by focusing on human strengths.

In his book, Seligman identifies three core elements that constitute agency: efficacy, optimism, and imagination. Efficacy is described as the immediate assessment of achieving a specific goal, while optimism relates to future achievements. Imagination, in this context, is the mental representation of goals that extend beyond the present. Seligman argues that these elements are not only vital for individual success but also for societal progress, with efficacy leading to effort, optimism to persistence, and imagination to innovation.

To illustrate his theory, Seligman embarks on a historical journey, examining why some individuals and societies thrive while others falter. He contrasts periods of societal growth with those of stagnation, suggesting that a confident, forward-looking society experiences progress, while a lack of agency leads to malaise. This historical analysis includes comparisons of the Hebrew Bible, the writings of China's Zhou Dynasty, and the Golden Age of Greece, noting that periods of cultural success often coincided with a diminished reliance on supernatural explanations for power and destiny.

Seligman also utilizes technological advancements to analyze language, identifying "agentic" words that signify states of mind related to action, determination, and hope in historical texts. The book includes practical advice for individuals seeking to cultivate optimism and agency.

However, the book concludes with a section on Artificial Intelligence (AI), where Seligman explores its potential to solve problems and even to supplant human roles. This aspect has drawn critical commentary, with some questioning whether this focus on AI overlooks the potential peril of AI diminishing human agency altogether.