I agree. There very clearly is a causation link between certain behaviors and long term success. Household income is something people have direct control over. I can go out and immediately cut mine in half tomorrow if I choose to. Doubling it would be harder but i imagine I could do that too if I took the appropriate actions.
being able to double the household income is a privilege you have. what makes you think anybody could do it but is chosing to live with half the income instead ?
