If you want to get good at building products that your users get into a habit of using, Nir Eyal’s book, Hooked, is a must-read primer on the topic. What follows is a summary of the book with its key takeaways so that you can get the gist of the book and get to work right away. If you have time, you should still purchase and read the book.

What are habits?

In the introduction, we get a useful definition of habits:

“automatic behaviors triggered by situational cues”: things we do with little or no conscious thought.”

And a clue why companies employ this tactic in the first place:

“Companies that form strong user habits enjoy severa...