Book Review: “Hooked: How to Build Habit-Forming Products” by Nir Eyal

“Hooked How to Build Habit-Forming Products” by Nir Eyal


Hooked: How to Build Habit-Forming Products” by Nir Eyal is a groundbreaking book that explores the psychology behind creating habit-forming products and services. Drawing upon extensive research and real-world examples, Eyal provides a practical guide for entrepreneurs, product managers, and designers to understand the mechanics of habit formation and apply them to their own products.

Book Details:

Title: Hooked: How to Build Habit-Forming Products

Author: Nir Eyal

Publication Year: 2014

Genre: Business, Product Design, Psychology

Pages: 256

Goodreads Rating: 4.06/5


In “Hooked,” Nir Eyal introduces the “Hook Model,” a four-step process that enables businesses to create products and services that form strong user habits. The book explores the triggers, actions, rewards, and investment required to build habit loops that keep users coming back for more. Eyal breaks down each element of the Hook Model and provides practical insights on how to apply them effectively.

The book is divided into four sections:

Introduction to the Hook Model Eyal sets the stage by explaining the power of habits in shaping user behavior and introduces the Hook Model as a framework for creating habit-forming products.

Trigger: The First Step of the Hook This section explores the different types of triggers that prompt users to take action. Eyal dives into internal and external triggers and discusses how to leverage them to increase user engagement.

Action: The Second Step of the Hook Here, Eyal delves into the importance of making actions as effortless and rewarding as possible. He provides strategies for simplifying user interactions and increasing the likelihood of desired behaviors.

Variable Reward and Investment: The Third and Fourth Steps of the Hook Eyal explains the role of variable rewards in creating addictive experiences and explores the concept of user investment, which enhances long-term engagement and loyalty.

Throughout the book, Eyal provides real-world examples, case studies, and actionable insights to help readers understand and apply the principles of habit formation. He also highlights ethical considerations and emphasizes the responsibility of product creators in fostering healthy and beneficial habits.


Hook Model: Gain a comprehensive understanding of the four-step Hook Model for building habit-forming products.

Triggers: Identify effective triggers, both internal and external, to prompt user actions and increase engagement.

Simplify Actions: Design products that make desired actions as easy and frictionless as possible.

Variable Rewards: Implement variable reward systems to create anticipation and increase user satisfaction.

User Investment: Encourage user investment in the product or service to foster long-term engagement and loyalty.

“Hooked” offers valuable insights for entrepreneurs, product managers, designers, and anyone interested in understanding the psychology behind habit formation and how it can be leveraged to create successful products. Eyal’s practical approach, supported by research and real-world examples, makes this book a must-read for anyone seeking to build products that capture and retain users’ attention.

Also read:

Hooked: Unleashing the Power of Habit-Forming Products

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