Hooked: How to Build Habit-Forming Products
Nir Eyal
Why I recommend it
Nir Eyal's Hook Model (Trigger → Action → Variable Reward → Investment) provides a practical framework for understanding and designing product engagement loops. As a growth marketer focused on retention and activation, this book gave me the vocabulary and mental models to think about user habits, engagement loops, and the psychology behind why people come back to products.
Key topics
Product EngagementRetentionBehavioural PsychologyHook Model
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