Hooked: How to Build Habit-Forming Products

by Nir Eyal

After finding popularity at Harvard, Facebook rolled out to other Ivy League schools, then to college students nationwide. Next came high school kids and later, employees at select companies.

As discussed in the first chapter, many habit-forming technologies begin as vitamins—nice-to-have products that, over time, become must-have painkillers by relieving an itch or pain.

breakthrough

Wherever new technologies suddenly make a behavior easier, new possibilities

Many companies have found success in driving new habit formation by identifying how changing user interactions can create new routines.

ripe for harvesting.

Once a product is built, Habit Testing helps uncover product devotees, discover which product elements (if any) are habit forming, and why those aspects of your product change user behavior. Habit Testing includes three steps: identify, codify, and modify.