Super Short Summary

In Hooked, Nir Eyal provides a guide for businesses and tech designers on creating habit-forming products using a four-step model: Trigger, Action, Variable Reward, and Investment. The book emphasizes the importance of user engagement for long-term success and ethical considerations in persuasive design. Eyal uses case studies to illustrate his points and offers practical advice for applying his model to various products. Negative emotions are discussed as potential triggers.