Hooked: How to Build Habit-Forming Products

by Nir Eyal

The study demonstrates the endowed progress effect, a phenomenon that increases motivation as people believe they are nearing a goal.

The "investment phase" of the Hooked Model is perhaps the most overlooked step. I still see so much opportunity to as users to do a bit of work to improve the product with use. What products and services do you use that ask you to do small bits of work that store value in the product? What products get better with use in your life?