Stop Overspending This Christmas—Boost Your Willpower Now

The Psychology Behind Holiday Spending

As the holiday season approaches, many of us find ourselves caught in a whirlwind of emotions and expectations. The cold, dark winds of December often lead us to let go of our usual caution when it comes to spending. Amid the festive cheer, the cost-of-living crisis can seem like a distant memory. We are naturally inclined to enjoy the moment, to forget about the winter gloom, and to embrace the joy that the holidays bring. This behavior is not just a choice; it's deeply rooted in how our brains are wired.

Understanding the Impulse to Spend

In the UK, people spend an average of £700 extra during Christmas. According to the UK Office for National Statistics, there are significant increases in the sales of various products, including books, music, computers, phones, electrical items, clothing, cosmetics, food, and alcohol. These spikes in spending are not just a result of financial planning but are driven by unconscious and emotional factors.

Neuromarketing, a field that studies how our brains respond to products, offers insights into why we are so susceptible to these impulses. Our brains are programmed to avoid being left out, a trait that was essential for survival in ancient times. When everyone else seems to be buying gifts and enjoying themselves, we are motivated by evolutionary instincts to join in.

Our desire for new things, even those without intrinsic value, also has roots in evolution. Acquiring new information and objects helps reduce uncertainty about the future. Marketing strategies that emphasize the "latest" version of a product can make it seem irresistible.

The Role of Neurotransmitters

Brain signals, or neurotransmitters, play a crucial role in shaping our behavior. Dopamine drives our motivation and impulsivity for rewards. Oxytocin, which fosters a sense of belonging, can be stimulated by buying similar items as our friends. Cortisol levels may rise if we fear missing out on something.

These neurotransmitters direct our attention when we look at advertisements, holding our gaze and making us want to feel the reward of purchasing. A study conducted in July 2025 reviewed eye-tracking data from participants looking at the top 50 most attention-grabbing Christmas ads. It found that heart-rending stories capture our attention, making us more likely to buy the product. Images featuring emotional icons, such as popular celebrities or lovable cartoon characters, distract us, which stops us from thinking about future goals like saving money.

Why Willpower Seems to Evaporate

The 1970 Marshmallow Test on delayed gratification, developed by psychologist Walter Mischel, suggested that children who could resist eating a marshmallow would have better self-control as adults. However, a 2018 replication of the test found that family background and economic situation were key factors in whether individuals could delay gratification.

If there is unrest in the family or money is tight, this could lead to faster, impulsive decisions and paradoxically over-spending on items we don't really need or want. Psychological research indicates that willpower is most depleted when we are tired, overwhelmed with thoughts, or in need of comfort. It's like overworking a muscle that requires constant energy.

This is the perfect formula for distraction at Christmas. We think about all the family and friends to buy gifts for and seek solace in the comfort of nice goods and experiences. All this overloads our cognitive control system in the prefrontal cortex—the front part of the brain under the forehead that helps us control our behavior by thinking about long-term goals. And the prefrontal cortex connects directly to the reward center of the brain. So if the prefrontal cortex is overloaded, the dopamine-driven, fast and impulsive reward responses are likely to take over.

Training Our Brains for Better Control

Despite these challenges, there are ways we can strengthen our willpower to enjoy the season with a sense of balance. The key is becoming conscious of our emotions and actions. The more we notice our impulsivity, the better we will be at controlling it next time.

You could start right now by noting down any impulsive purchases you've made over the last week or month. Next time you go to buy something, ask yourself whether you're using slow or fast thinking. Since the prefrontal cortex system is like a muscle that can be trained to be stronger, cognitive training leading up to Christmas may help strengthen your resolve. Think of playing chess online, or sudoku, or reading one of the books you might have been given last Christmas. Puzzles, reading, meditation practices that slow the mind, can all strengthen your brain's circuits, and maybe help to be less impulsive this year.

And what about if you're reading this while you're in a cafe, taking a break from Christmas shopping? You can review your shopping list (or write one before you leave home) and reaffirm your plans. Remind yourself to stick to the list and budget no matter what. Research shows that planning and setting intentions prevents impulsive responses, especially if people plan a contingency in advance about what they will do if they spot a bright, shiny bargain.

If you can rein in impulsive Christmas purchases now, your future self will thank you for it.