Want to gain users for your next big product or service? First, you’ll have to understand how the human mind works.

Watch Nir Eyal — start-up founder, lecturer, entrepreneur — explain his theory on How to Manufacture Desire. In his video (which is based off an article he wrote explaining the topic) Eyal discusses how big companies like Facebook and Twitter gained so many users through creating a habit-forming product.

If you’re trying to build something that will get people hooked, take a look for valuable information.