We all know that creativity is the backbone of innovation and, ultimately, business success. But we don't always think deeply about how creative people get their ideas and the steps we might take to do the same. Gabriella Rosen Kellerman, a physician and chief product and chief innovation officer at BetterUp, and Martin Seligman, a professor of psychology at the University of Pennsylvania, say there are four types of creativity -- integration, splitting, figure-ground reversal, and distal thinking -- and explain how each shows up at work. Amid startling advances in artificial intelligence, people who hone these skills will set themselves apart. Kellerman and Seligman are the authors of the HBR article “Cultivating the Four Kinds of Creativity” and the book Tomorrowmind.