The book explores how simple “nudges” can be used to influence people’s decisions and improve their overall well-being in areas like health, wealth, and happiness. The authors argue that by understanding the psychological and emotional factors that influence our choices, policymakers can design policies that encourage people to make better decisions for themselves and society as a whole. The book highlights various examples of nudges in action, including design changes in workplace pension plans, reminders to get vaccinated, and the use of “choice architecture” to encourage healthy eating.