This simple trick will help you live a much healthier life

Most people think that building better habits or changing your actions is all about willpower or motivation. But the more I learn, the more I believe that the number one driver of better habits and behavior change is your environment.

Willpower vs. environment

Anne Thorndike is a primary care physician at Massachusetts General Hospital in Boston who, along with her colleagues, completed a six-month study that was published in the American Journal of Public Health. This study secretly took place in the hospital cafeteria and helped thousands of people develop healthier eating habits without changing their willpower or motivation in the slightest way.

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Thorndike and her team proposed that by changing the environment and the way that food was displayed in the cafeteria, they could get people to eat healthier without thinking about it. There were multiple phases of the experiment, but the portion that really interested me focused on what Thorndike refers to as "choice architecture."

Choice architecture is just a fancy word for "changing the way the food and drinks are displayed." But, as it turns out, it makes a big difference.

The impact of choice architecture

The researchers started by changing the choice architecture of the drinks in the cafeteria. Originally, there were three main refrigerators, all of which were filled with soda. The researchers made sure that water was added to each of those units and also placed baskets of bottled water throughout the room.

What happened?

Over the next three months, soda sales dropped by 11.4 percent. Meanwhile, bottled water sales increased by 25.8 percent. Similar adjustments and results were made with food options. Nobody said a word to the visitors who ate at the cafeteria. The researchers simply changed the environment and people naturally followed suit.

The usual argument for sticking to better habits is that you need more willpower, motivation, and discipline. But studies like this one showcase just how important your environment can be for guiding behavior.

Environment design becomes even more important when you understand the daily fluctuation of willpower.

The willpower muscle

Decades of research have revealed that willpower is not something you have or don't have, but rather it is a resource that can be used up and restored. Like tired muscles at the end of a workout, your willpower can become depleted if you use it too much. Much of this research is explained in excellent books like The Willpower Instinct by Kelly McGonigal (audiobook) and Willpower by Roy Baumeister and John Tierney (audiobook).

A classic example can be found by looking at college students. During finals week, students use all of their willpower to study and everything else collapses as a result. People eat whatever they can find, students who haven't smoked all semester start lighting up outside the library, and many people can't even muster the strength to change out of their sweatpants. There is only so much willpower to go around.

We don't typically think about willpower and motivation as a finite resource that is impacted by all of the things we do throughout the day, but that's exactly how it works.

And this is where choice architecture and willpower come together.

Choice architecture in everyday life

When your willpower is depleted, you are even more likely to make decisions based on the environment around you. After all, if you're feeling drained, stressed, or overwhelmed then you're not going to go through a lot of effort to cook a healthy dinner or fit in a workout. You'll grab whatever is easiest.

And that means that if you take just a little bit of time today to organize your room, your office, your kitchen, and other areas, then that adjustment in choice architecture can guide you toward better choices even when your willpower is fading.

For example, in Richard Thaler's best-selling book, Nudge: Improving Decisions About Health, Wealth, and Happiness (audiobook), he discusses research that reveals that items on the top shelf of supermarkets (near eye level) tend to sell more than items on lower shelves.

It's easy to apply this discovery to everyday life: Simply place healthier foods in more visible spots in your refrigerator, pantry, and around the kitchen. Meanwhile, you can tuck away cookies, treats, and other unhealthy choices down on the lower shelves. This is one way to use choice architecture to make it more likely that you'll grab healthy food, even when your willpower is fading.

To change your behavior, change your environment

Like the visitors in the hospital cafeteria, choice architecture can help you automatically do the right thing without worrying about willpower or motivation. If you design your environment to make the default choice a better one, then it's more likely that you'll make a good choice now and have more willpower leftover for later.

Environment design works. Talking about tiny changes like moving your healthy foods to a more visible shelf might seem insignificant, but imagine the impact of making dozens of these changes and living in an environment designed to make the good behaviors easier and the bad behaviors harder.

When you're surrounded by better choices, it's a lot easier to make a good one.

This article was originally published at JamesClear.com. To get more self-improvement ideas based on proven scientific research, join his free newsletter.