Ha! I mow the front lawn on Wednesday, the back lawn on Saturday ..

.
Dad is the longest-living of 9 siblings. Only one sister lived longer than Mom, who made it to 87. Only one of her 4 brothers came anywhere close.
That test. It's only one trait and we know that being conscientious about things doesn't always lead to success nor happiness. And, even if they do come together, plenty of conscientious, successful, happy people don't have a long life. It just "bends the curve" in that direction.
According to the authors, a healthy life activity like volunteering is both related to and different from being conscientious. Oh yeah, I picked up the book

. I mean, a look at 1,500 life stories and 100 years ..!
One thing noted was how changes can be of benefit at anytime. A selfish, careless, just pain-in-the-rear kid in 1921 was able to turn things around, enjoy his job, take on civic responsibility, be a good husband (even according to his wife!), after spinning his wheels like an idiot, well into adulthood. He was around a long time.
By the way, the happy-go-lucky types, they might have been fun and popular, all that - they tended not to live long. Happiness, maybe even because of a worry-free gene and being loved, well - that helps but not a great deal. I think if you are loved, you gotta take that seriously

. It probably isn't just looks or being cheery. What's expected, hoped for, from you?
Steve