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.
Next list all your variable expenses_those that may change from month to month such as groceries, gas and entertainment. This is an area where you might find opportunities to cut back. Credit card and bank statements are a good place to start since they often itemize or categorize your monthly expenditures. Tip: Record your daily spending with anything that’s handy_a pen and paper, an app or your smartphone.