Anecdotal, also I admit I don't know what the exact range of adversity here is. But from all the immigrant friends I have living in the US and the ones who aren't here, a lot of them come from 'living on the street' environments from South Asia. Their attitude to life is to make it work no matter what and they are stoic. Their drive is something one would aspire to. Inability to take an action isn't an option or a natural state they can be at. I cannot help but compare them to Western born folks and see the stark difference in approaching everything to life.