Pretty much. I think people really want a silver bullet. Spend as little money as you're comfortable with. Invest the rest in an index fund. Wait. That's pretty much it.
EDIT: I also should add that the "spend as little money" part does not mean you should necessarily become homeless, or that you shouldn't experiment with things that might help you that cost money.
EDIT: I also should add that the "spend as little money" part does not mean you should necessarily become homeless, or that you shouldn't experiment with things that might help you that cost money.