12. Get some weight
The most underrated option to get a longer life is to gain some weight. Too much lean and thin body is not suitable for longer survival. If you gain some weight, you will get much more energy and resources to survive in your old age.
So, you must get some weight and save them for your older period.
So, those are the things that will provide you long life and satisfaction. Satisfaction is the main thing to achieve a longer life. Also, you should avoid things like bad diet and routine. Just follow those points and everything will be fine and you will get a longer period of living.
You should not obey those points completely but following those closely will surely increase the chance of getting a higher life span.
There might be other things in your life that will help you get a longer life. So keep open your eyes for those hits.