Sometimes, you can walk right past stuff and tell yourself: "Not looking for that kind of stuff right now. Don't need any more of it. Cutting back."
And you pat yourself on the back, affirming your resolve and self control.
Other times....
...you grab the item, clutch it to your chest and run to the cashier to pay for it.
You might even squeal a little.
And do a little happy dance.
That might or might not involve a little butt wiggle.