“Hooked” by Nir Eyal makes a mention of the Hook Model and ways to ingrain a product in the mind’s of a customer.

To hook a customer to a product , the product should get ingrained with the habit of the customer.The following are important takeaways:

1. Hook Model – Start with and move subsequently a) Trigger b) Action c) variable Rewards d) Investment
2. Habit Zone – A product should start as a vitamin(nice to have) and should end up being a pain killer(must have).When the frequency v/s Perceived utility crosses the Habit Zone threshold the customer cannot live without the product e.g. FB , Instagram
3. Habit formation is a  key for a product’s high performance and repeat value in the mind of a customer.