If I were to take a guess based on what I believe to be common in immigration history: they have the drive of wanting (or needing) to succeed coupled with the l

If I were to take a guess based on what I believe to be common in immigration history: they have the drive of wanting (or needing) to succeed coupled with the lack of complacency. Citizens of a country naturally are more comfortable and don't have the same sense of urgency to improve their conditions. That said, moving to another country in the first place is a big change, taking calculated risks must be considered apart of the mental makeup of these individuals.