The Fourth Law of Behavior Change

We are more likely to repeat a behavior when the experience is satisfying. Pleasure teaches your brain that a behavior is worth remembering and repeating. Chewing gum had been sold commercially throughout the 1800s, but it wasn't until Rigley launched in 1891 that it became a worldwide habit. Manufacturers enjoyed great success when they added flavors like spearmen, peppermint, and cinnamon to their products.