Genetics play a significant role in our lifespans no doubt about it, but that's not an insurmountable obstacle imho. By "taking care of ourselves" I mean living a frugal celibate lifestyle, and that's the only possible way to achieve a long healthy life (even if not an eternal one). My dad has been an avid smoker since I knew him and he picked up the bad habit of alcohol abusing a few years ago, and he probably ed random es while being married to my mom, but Rogue is a good man who'll never follow that type, I'm the exact opposite in some way. I've never smoked and will never do it, and last time I drank some alcohol was like 3 years ago, on the so-called "last dinner" among our undergraduate classmates before graduation, and I haven't put even a drip of alcoholic drink in my mouth ever since. And I've vowed to be a lifelong celibate and have never touched even a hand of 's.
Parents can be terrible role models sometimes (typical boomers, tbh), but fortunately I'm aware of it and have chosen someone else's lifestyle to follow - Zhang Sanfeng, an honorable and well-respected Taoist in ancient China who lived through 3 dynasties for a total of more than 160 years. No one even know when/where he died, or if he ever died at all... maybe he's still living a reclusive frugal life somewhere in China, tbh.