[grecy]

You forgot the three most important things, which are 10,000 times more important than the ones you listed.

Hard work, hard work and hard work.

[sirmarksalot]

Necessary but not sufficient.

[kkarakk]

what about jackie chan's life story screams luck and people handing him things coz he was handsome to you? literally all he did was hard work

[MagnumOpus]

The part that screams luck is that for every hard working Jackie Chan there are ten -- or more likely a hundred -- people just as talented and working just as hard, who didn't become multimillionaire A-list celebrities.

Which is why the parent poster said hard work is necessary but not sufficient.