Housing costs, including mortgage, taxes, insurance, upgrades, and maintenance, must fit within a budget that also allows for food, transportation, vacations, investments, and savings.
"your home is an expense your housing costs are expenses which means they have to fit right here within your budget which means all the housing costs that I just showed you your mortgage your property taxes your insurance your upgrades and your maintenance all of these things have to fit here and still have money left over to pay for your food to pay for your cars to pay for your vacations and all the other expenses and you still have money left over to invest and you still have money left over to save"