Avoid becoming addicted to anything (e.g., don't consume unhealthy illicit substances). Get enough sleep, sunlight, and exercise. Also, make sure you adopt a he

Avoid becoming addicted to anything (e.g., don't consume unhealthy illicit substances). Get enough sleep, sunlight, and exercise. Also, make sure you adopt a healthy diet where you remember to also consume things that will improve your gut bacteria so that your body thoroughly absorbs all those healthy nutrients. Of course, if you don't care how long you live, you can ignore all of the above advice. Some people say they don't want to live forever, but I've yet to encounter anyone who was happy to exit this world like a satisfied diner at a restaurant.