Wow. You make a lot of generalization about a large number of people.

I don't know how much luck plays role in success.

I do know that people who see other's people success as luck tend to be not lucky.

"Opportunity is missed by most people because it is dressed in overalls and looks like work."

Did you ever immigrate to a country where you don't even speak the language, with a wife and 5 children, took 3 (concurrently) low-paying jobs just to feed your family and still had the energy and ambition to try to open a small business?

That Donut Kind really had it easy.