Only staying active will make you want to live a hundred years.. Ikigai - the happiness of always being busy.. Treat everyone like a brother, even if you’ve never met them before.. Nurturing friendships, eating light, getting enough rest, and doing regular, moderate exercise are all part of the equation of good health.. Helping others might be an ikigai strong enough to keep people alive.. The keys to longevity are diet, exercise, finding a purpose in life (an ikigai), and forming strong social ties—that is, having a broad circle of friends and good family relations.. Members of blue zone communities (communities with the longest average lifespan) manage their time well in order to reduce stress, consume little meat or processed foods, and drink alcohol in moderation.. Fill your belly to 80 percent.. Rather than overeating and wearing down our bodies with long digestive processes that accelerate cellular oxidation, stop eating when you feel your stomach reach 80 percent of its capacity.. Extra food will give us pleasure in the short term, but not having it will make us happier in the long term.. The Okinawan diet is rich in tofu, sweet potatoes, fish, and vegetables.. A moai is an informal group of people with common interests who look out for one another.. Maintaining an active, adaptable mind is one of the key factors in staying young.. Having a youthful mind also drives you toward a healthy lifestyle that will slow the aging process.. Just as a lack of physical exercise has negative effects on our bodies and mood, a lack of mental exercise is bad for us because it causes our neurons and neural connections to deteriorate—and, as a result, reduces our ability to react to our surroundings.. Most health problems are caused by stress.. Mindfulness is a stress-reduction method of focusing on the self: noticing our responses, even if they are conditioned by habit, in order to be fully conscious of them. In this way, we connect with the here and now and limit thoughts that tend to spiral out of control.. People who maintain a low level of stress, who face challenges and put their heart and soul into their work in order to succeed, live longer than those who chose a more relaxed lifestyle and retire early.. Go on a walk for at least twenty minutes each day.. Sleep seven to nine hours every night.. Those who face challenges with a positive outlook and are able to manage their emotions are already well on their way toward longevity.. A stoic attitude—serenity in the face of a setback—can help keep you young, as it lowers anxiety and stress levels and stabilizes behavior.. Create an unhurried, deliberate lifestyle.. Know how to approach challenges with a positive attitude and don't be overwhelmed by the obstacles you face..