We all belong somewhere. We all get imbued from childhood with various social norms. If we shift to a different community, we discover and may incorporate within ourselves different norms. Like when we change the place we study, or the type of work we undertake - or, as she points out, change the country in which we live.
I found it hard to understand some American perspectives when I was in rez. And I know Americans found a non-US perspective very strange, at times. Even now, when I talk with American friends, they have a world view that sees my world view as incomprehensible (and vice versa). Neither is right, neither is wrong; open conversation opens doors of understanding.
It's often said that learning another language helps deepen understanding. It's how people really get into the other language and perceive its different structure and the way it expresses ideas. It's not merely a word-learning exercise, but a mind-broadening one. I wonder if there are people here who are fluent in English, and Spanish or Italian or Hindi, etc, born of immigrant families, who could say something about who they are when they interact in the "other" language?
On a related note, I lived overseas in yet another different country (English speaking) for many years. When I got laid off from my job in the UK, I couldn't find any work, despite oh-so-diligent efforts. After a few years of this, I thought, "What would I do if I were in that other country?" A change of mindset got me started into self-employment, and now after 7 or 8 years I truly have no desire to go back to my old employed way of life.