The author of the piece about the famous long-term study of Harvard students from college to old age says that George Vaillant has demonstrated little more than that an ability to adapt predicts an ability to adapt. From Their Right Stuff -The evolution of the Harvard guinea pigs:
As with orthodox Freudianism, there is a hedonistic bias to the ideal of maturity that the study proclaims. To blossom is to shed “rigid” attitudes. There is nothing more contemptible than an “inhibition.” Perhaps you think that, in a free society, in-hibitions are good since they spare us from having to submit to others’ pro-hibitions. But if that is how you think, you will find this book’s system of values un-intelligible. Vaillant sees evidence of one Episcopal minister’s maturation in the way “he had put aside absolute convictions about faith, morality, and authority in favor of a new appreciation of their relativity and mutability.” If this book has a hero, it is a meathead named Boatwright, who says, “I don’t give a damn if I’m remembered for anything. I’ve enjoyed my life and had a hell of a good time.”
I am sorry to say that the socio-cultural bias is a darn shame. My profession is half-good at defining problems, but terrible at defining relative health. Everybody has at least one problem, and having problems is normal.
Everybody struggles with problems. As CS Lewis reminded us, bear that in mind whenever you meet somebody. Therefore be kind (but always be alert to predators).