 Second psychological tip, sell-on habits. What does that mean? What is the best way to get the people to buy from you again and again and again? Well, tap into their habits and their activities. What do they do on a regular basis? And this is exactly what KitKat did by signaling their bar representing taking a break. So whenever someone takes a break, they would be thinking about eating a bar, just like how they incorporated it into their slogan. Have a break, have a KitKat.