If you can't forgo a payment such as a minimum payment on a credit card, it can be considered a "need," according to the Warren and Tyagi. Why? Because your credit score will be negatively impacted if you don't pay the minimum. By the same token, if the minimum payment required is ษ and you regularly pay 贄 a month to keep a manageable balance, that additional ๛ isn't a need.
You might spend more on "wants" than you think. A threadbare minimum of warm clothing is a need. Anything beyond that, such as shopping for clothes at the mall rather than at a discount outlet, qualifies as a want. Yes, the rules are tricky, but if you think about it, they make sense.