Cool having googlers just pop in to the comments to explain/counter people's observations. Most of my useful google search tricks were from some article I read a decade or more ago with some inurl: and file format tricks
I think you drastically over-estimate how "fulfilling" something like therapy is.
Day in and day out you will see people you desperately wish to help, who if they listened to 20% of what you offered would see their lives change immensely, only to watch them repeat the same behavior without change day in and day out.
Focus on short-term survival, how not to die of exposure
Generally speaking, you can only live 3 minutes without air or if you have massive bleeding.
You can only live 3 hours without shelter in a cold, wet, and windy setting.
Finally, you’ll only have 3 days without water and 3 weeks without food.
Of course, these numbers can vary wildly, but it’s still a good framework to help us organize your work and our needs.
Still unsure on the particular zone/diet hype. The "Power 9" from the NIH publication was interesting though:
Move naturally. Live in environments that constantly nudge them into moving without thinking about it.
Purpose. Ikigai/plan de vida/"why I wake up in the morning."
Routines to shed stress
80% Rule. Hara hachi bu — stop eating when stomach is 80% full. People in the Blue Zones eat their smallest meal by early evening then no more for the rest of the day
Plant slant. Beans, including fava, black, soy, and lentils, are the cornerstone of most centenarian diets. Meat — mostly pork—is eaten on average only 5 times per month. Serving sizes are 3 to 4 oz, about the size of a deck of cards.
Moderate drinkers outlive nondrinkers. The trick is to drink 1 to 2 glasses per day, with friends and/or with food.
Belong. 258 of 263 centenarians interviewed belonged to some faith-based community. Denomination does not seem to matter. Research shows 4 to 14 years of life expectancy increase from weekly faith attendance!
Loved ones first
Right tribe. Okinawans created moais — groups of 5 friends that committed to each other for life. Smoking, obesity, happiness, and even loneliness are contagious. Social networks of long-lived people have favorably shaped their health behaviors.