North Korea is one of the very few places that you can't move away from, so I grant you that. All other people who can move freely around the world - yes, it was not luck, it was hard work.
Moving into the US - or being born there - really doesn't make you successful, you'll find yourself grinding daily if you want some success. Actually, you may find it's much harder for you there than elsewhere (where you might find less outrageous success, but with much less hard work).
> It's not luck being born without birth defects, being healthy, and still being alive to this day?
Exactly, that's modern medicine - thank scientists, doctors, engineers and insurance bankers for their hard work. Gods and fate have zero part in it.