This TED talk can be a revelation: https://www.ted.com/talks/bj_miller_what_really_matters_at_t...
And the Bill Gates thing? PLEASE. Yeah, I agree with the previous comment. A horrible example.
Bill Gates was one of the most lucky sons of bitches in the history of the planet. Born to wealthy parents, he was impossible to deal with, so they took him to a therapist (again, a lucky pick) that advised them to set Gates free. They put him in this prep school with other privileged kids, and like a meteor made of pure gold, by luck, it had a computer. Almost no schools had a computer at the time.
Hard work is only part of the equation. You have to be at the right place, at the right time. Most people never are.
Might as well read the next article on "Ten morning habits of billionaires". Luck. Is. A. Factor.