Ramit at I Will Teach You To Be Rich shares a system his friend uses to set a firm amount of discretionary spending each month and then not spend more. It’s a take on the “cash in envelopes” system (represented digitally in programs like Budget, and it’s just as grok-able—when the money’s gone for the month, it’s gone. Obviously, you’d want to ensure you don’t draw serious overdraft fees, and you’d have to have a handle on your monthly budget to begin with, but it’s at least as effective as deducting credit charges as you go, and possibly moreso, with the thought of having a card turned down a nice social conditioner. For those with a fuzzy grip on spending, this technique could make the numbers seem pretty firm. How to use a separate debit card for discretionary spending [I Will Teach You To Be Rich]