" - Habits are defined as behaviors done with little or no conscious thought. - The convergence of access, data, and speed is making the world a more habit-forming place. - Businesses that create customer habits gain a significant competitive advantage. - The Hook Model describes an experience designed to connect the user's problem to a solution frequently enough to form a habit. - The Hook Model has four phases: trigger, action, variable reward, and investment. "

― Nir Eyal , Hooked: How to Build Habit-Forming Products