The easiest approach is probably to avoid or reduce obviously harmful habits and behaviors that result in chronic diseases (eg: cardiovascular disease, diabetes

The easiest approach is probably to avoid or reduce obviously harmful habits and behaviors that result in chronic diseases (eg: cardiovascular disease, diabetes) - Avoid smoking and hard drugs - Avoid excessive alcohol consumption - Avoid fast food, excessive salt and sugar, deep fried dishes - Avoid excessive stress and worrying Besides that, focus on the basics: - Consistent and restful sleep - Healthy, balanced diet - Regular exercise - Novel and mentally-stimulating activities, continuous learning - Strong social connections (not just online social networks, but actual friends and family they can hang out with in-person) If you want even more, there have been studies about 5 blue zones where inhabitants regularly reach ages of 100 or more, and 9 habits they follow: https://www.bluezones.com/2016/11/power-9/ https://www.bluezones.com/2016/11/power-9/ 1. Move naturally: build exercise into your daily life 2. Purpose: a reason to wake up in the morning 3. Downshift: Routines that shed stress 4. Only eat until you are 80% full. Consider occasionally fasting. 5. Plant and bean-based diet 6. Moderate (1-2 cups/day) consumption of alcohol 7. Faith 8. Close family connections 9. Social circles that support healthy behaviors