You are probably aware that the people who live the fittest and longest lives are the Japanese. This can be narrowed down more specifically to the people of Okinawa, one of the islands of Japan. Okinawa is also the origin of a Japanese philosophy called Ikigai. Those who believe in Ikigai regard it as the key to a long and contented life. The island has one of the largest percentages of centenarians in the world, each dwelling has its own vegetable garden, and residents stay active and busy well beyond retirement age. If you want to live a long, healthy, and happy life, you too should find your inner Ikigai. Here are the 10 rules of Ikigai to help you do just that.