Hooked How To Build Habit-forming Products By Nir Eyal Pdf !link! Jun 2026

Investments build anticipation and lock the user into the ecosystem through two psychological biases:

When users invest time, data, effort, social capital, or money into a product, they load the next trigger and increase the product's value. The investment phase leverages a powerful psychological bias: (often called the IKEA effect). hooked how to build habit-forming products by nir eyal pdf