I would somewhat agree, I grew up in a third world European country (yeah, we exist) and I realized, compared to a lot of people in Western Countries, people here (older people at least, the younger generation is influenced by the west) are extremely stubborn and perseverant, spending much of their time thinking about how they can provide and being optimistic considering all the factors, thus being less susceptible to depression and anxiety.

A lot of my family were optimistic and happy, even though they worked long hours, and tried to make it, and generally we didn't have problems with mental issues (even though we've been through an economic crisis, wars, poverty, famine, etc...)