Amazing Adviser

"Hooked: How to Build Habit-Forming Products" by Nir Eyal is a book about the psychology of habit formation and how it can be applied to the design of products and services.  Eyal draws on his experiences as a technology entrepreneur and consultant to provide practical advice for product designers and marketers.   The book is divided into four parts: "Trigger," "Action," "Variable Reward," and "Investment." In the first part, Eyal discusses the importance of creating triggers that prompt users to take action.  He explores the different types of triggers, including external triggers such as notifications and advertisements, and internal triggers such as emotions and habits. He also provides practical advice for designing effective triggers that are relevant and timely.   In the second part of the book, Eyal focuses on the importance of making it easy for users to take action.  He discusses the concept of "friction" and