What is the most important thing regarding Longevity?

 Some would say it's genetics. But, from my point of view that is only one thing.

Second to genetics would be your attitude and are you able to stay positive enough regarding what you are facing in life.

For me, personally it is something like "Hope springs eternal if we die Daily"

Which means to me "Dying to God each night you go to sleep and then waking up sort of like Lazurus reborn every day of your life.

What I mean by this is unless you can give to God all your problems when you go to sleep at night they seem to damage your health when you can't or don't do that and thereby shorten your life.

Also, being open to changing how you live your life in an ever changing way often is helpful too.

I find adapting to the changes in the world and the changes as we age is important. If we are trying to live in the past the way things used to work that isn't going to work at all.

So, unless we are constantly adapting to all the changes inside and around us then often we are gone by 40 or 50 years old.

Sometimes we don't like the changes but almost dying at age 50 and being forced to retire because of my health is also one of the reasons I'm alive today at 77.

What being forced to retire did was to force me to adapt to retirement young enough so I could actually adapt to retirement. For example, my father retired at age 65 but then was gone by age 69 which I thought pretty sad. However, it is also true he was a workaholic personality that needed to be busy all the time which might have contributed to his relatively early death too.

Living a long time has a lot to do with how well you adapt to new situations in your life.

So, embracing adaptation in all ways often allows you to go on when others fall by the way that you know.

That's another thing. How well do you deal with those around you dying?

As you age you are going to watch first your elders passing away usually and then your peers along the way. 

I can remember being so upset at the death of my best friend in Junior High and High School in 2011 that I couldn't speak most of that day because of how hard it was on me.

And when my father passed away in 1985 it took me until 1998 when I almost died myself to get beyond my father's death. So, learning to adapt to all the changes in life often decides when we die.

I find living on for my wife and children and grandchildren works best for me now.

By God's Grace