Hard work isn’t enough.
One can be the hardest working house cleaner in the world and never get wealthy.
One has to do something that people are willing to pay riches for. If you start a house cleaner business it is possible to get wealthy - but not just working as a house cleaner.
Read an interesting remark about Michael Jordan and his wealth. People are willing to pay basketball players millions and he was a man of singular ability, drive and work ethic. But nobody was willing to pay him much as a baseball player - his work ethic didn’t pay off. Now he is a Basketball coach and his work ethic isn’t translating into winning seasons for his team.
Work ethic is just one ingredient. A profession where high rewards are available is another. Natural talent is another.
You can’t just work hard, though hard work alone can keep you fed and clothed. To get wealthy requires hard work, intelligence, and willingness to take risk.