So here’s our psychologist-approved strategy: go in with a list. Lists, as Yarrow says, are golden. Know what you want to get, and budget in something for yourself. Retailers are smart, and there will be little trinkets and delightful things that take you by surprise. The problem is, if you go in thinking you can’t get anything for yourself—but then end up succumbing—you’ll open the floodgates. Once you bought that bottle of perfume, why shouldn’t you also get those pants? “If you budget in a treat, you get very analytical,” explains Yarrow. Now it becomes when you like those fingerless gloves, but you also like the platform shoes, you have to decide which one you’d prefer.