You Blamed Your Willpower Again This Morning. The Research Says You Might Be Wrong.

You told yourself you would not check your phone first thing this morning. You were going to skip dessert. You were going to finally start the workout you keep rescheduling. Then you did not, and somewhere in the gap between intention and action, you blamed your willpower. A growing body of research on willpower and self control, including work out of Canadian universities, says that blame is probably misplaced.

What Most People Get Wrong About Self-Control

The common mental model treats willpower like a muscle: strong ones resist temptation, weak ones give in. So when you cave to the thing you were trying to avoid, the obvious conclusion is that your willpower muscle just was not strong enough that day.

Here is the problem with that story. Research suggests the people who look like they have the most self-control are not actually winning more internal battles than everyone else. They are simply running into far fewer situations where willpower gets tested in the first place. Michael Inzlicht, a psychology professor at the University of Toronto who has spent years studying self-control, has found something worth sitting with, as he told CBC News: when people deliberately use willpower in the moment to resist something, they succeed only about half the time. The people we consider to have strong self-control are often not leaning on that in-the-moment resistance at all. They have simply arranged their lives so temptation shows up less often. The actual goal, then, is not getting better at resisting. It is encountering less to resist.

Willpower and Self-Control Are Not the Same Thing

These two words get used interchangeably, but they describe different things. Willpower is the in-the-moment effort: the internal push to say no to a cupcake at the office, to put your phone down when you know you should sleep, to drag yourself to the gym when every part of you wants the couch instead. It is the act of actively fighting an urge as it happens.

Self-control is the bigger category. It covers planning, building habits, shaping your surroundings, and constructing a life with fewer of those willpower-testing moments to begin with. Someone who prepays for a set of exercise classes and blocks them into their calendar has exercised self-control, whether or not they ever need much in-the-moment willpower to actually show up.

Dr. Inzlicht's research also points to something that matters for anyone building a habit: people who succeed long-term tend to find ways to make the goal feel more natural rather than more forced. If you genuinely enjoy the activity, physical activity stops feeling like an act of self-denial. Goals rooted in what you actually want tend to outlast goals that started because your doctor or your partner told you to do something. The same biology-over-blame idea shows up in a different context in Medimap's piece on weight loss drugs and willpower: much of what gets chalked up to a lack of discipline turns out to be biology working against you, not a character flaw.

What Your Environment Is Actually Doing to Your Choices

Zoë Francis, a psychology professor at the University of the Fraser Valley in Abbotsford, British Columbia, studies how adults' environments shape their ability to reach goals, and her example is a good one. Every online shopping notification that lands in your inbox forces a small decision: do I click it, do I add this to my cart, do I complete the purchase. Each of those is a moment where willpower can fail. Unsubscribe from those emails, add an ad blocker, and stop following accounts built to sell you things, and you have removed most of those decisions before they ever arise. That is environment design for habits in practice: you are not becoming more disciplined, you are shrinking the number of moments discipline gets tested.

The same logic scales down to ordinary life. Keep chips out of the house and you never have to resist them at 10 p.m. Charge your phone in another room and you never have to fight the urge to check it in bed. Lay out your gym clothes the night before and you have removed one decision from an already groggy morning. This is not a trick, it is simply what the research supports: changing your surroundings tends to outperform trying to strengthen your resistance to them. One Medimap community member described exactly this shift while working through chronic insomnia: cutting out the sleep-tracking app that was feeding a nightly anxiety loop turned out to matter more than any amount of willpower. You can read that story here.

Why the Marshmallow Test Became So Complicated

You have probably heard of the marshmallow test explained somewhere before: young children were offered a marshmallow and told that if they waited without eating it, they would get two instead. Early results suggested children who waited longer went on to have better outcomes later in life: higher test scores, better health, stronger relationships. For a while, that got treated as proof that self-control was a fixed trait you either had or did not.

Later research complicated that story significantly. Once researchers accounted for a child's household income and home environment, those impressive links to adult outcomes shrank considerably. Kids raised in households where resources were unpredictable had entirely reasonable grounds not to trust that a second marshmallow would actually show up later. Waiting was not always the rational choice in their situation, and their home environment, not their character, was doing most of the explanatory work that researchers had originally credited to willpower. Dr. Inzlicht has pointed to this as a useful reminder that popular psychology findings need independent replication before they get to reshape how we think about human behaviour more broadly.

How to Actually Apply This to Your Own Habits

The research points toward a handful of concrete shifts that outperform simply telling yourself to try harder.

Decide in advance. Francis recommends committing to a habit before you are standing in the moment where willpower would otherwise be required: prepay for the class, put the workout in your calendar, decide exactly where, when, and for how long, ahead of time.

Make the goal actually yours. Inzlicht's research consistently finds that self-chosen goals stick better than externally imposed ones. If exercising only exists because your doctor told you to, it is harder to sustain than a version of movement you have found a way to actually enjoy. This takes some trial and error, but it pays off.

Start small. Francis notes that achievable goals build their own momentum. A habit that begins with a walk around the block is more likely to grow into something bigger than one that begins with a two-hour gym session you are already dreading, and that small starting point matters.

Remove the trigger. J. Bruce Morton, a psychology professor at Western University, points to smoking-cessation programs as a model here: identifying specific triggers and avoiding them is one of the most reliable tools for preventing relapse, and the same logic applies to any habit you are trying to break.

Build in support. Study groups, workout partners, and friends chasing similar goals all show up consistently in the research as things that make hard goals feel more manageable. You do not have to run entirely on internal resources.

When to Actually Talk to Someone

If you are struggling to maintain habits that affect your physical or mental health, and the strategies above have not moved the needle, it is worth talking to a professional. A psychologist or counsellor can help with goal-setting, behaviour change, and identifying what specifically is making things harder for you. A family doctor is a reasonable first stop if you are not sure where to start.

Is willpower actually a limited resource, like a muscle that gets tired?

Not in the way most people assume. Research led by psychologists like Michael Inzlicht suggests that people with strong apparent self-control are not simply winning more willpower battles. They tend to encounter fewer tempting situations in the first place, often because they have shaped their environment to make the desired choice the easier one.

What is the actual difference between willpower and self-control?

Willpower is the in-the-moment effort used to resist a specific urge, like saying no to dessert. Self-control is the broader category that includes planning, habit-building, and shaping your environment so fewer willpower-testing moments come up at all. Self-control is the bigger, more reliable lever of the two.

Why did the marshmallow test become controversial?

Later research found that once a child's household income and environment were accounted for, the link between waiting for a second marshmallow and later life success weakened substantially. Children from less predictable households had good reasons not to trust a promised reward, meaning environment, not innate self-control, explained much of the original pattern.

How can I make a new habit easier to stick with?

Research points to deciding in advance rather than relying on in-the-moment motivation, choosing goals that feel genuinely yours rather than imposed by someone else, starting smaller than feels impressive, and removing known triggers from your environment where possible. Social support also reliably helps.

Does changing my environment really work better than just trying harder?

For most people, yes. Research on self-control consistently finds that reducing exposure to a temptation (removing junk food from the house, silencing shopping notifications, keeping your phone out of the bedroom) outperforms relying on in-the-moment resistance, since it removes the decision rather than asking you to win it every time.

When should I see a professional about a habit I cannot break?

If habits affecting your physical or mental health have not responded to practical strategies like environment changes, smaller goals, or removing triggers, a psychologist, counsellor, or family doctor is a reasonable next step. They can help identify what is specifically making change difficult for you.

If you need help finding a doctor, psychologist, or counsellor in your area to talk through a habit or health goal you are struggling with, Medimap makes it easy to search and book at medimap.ca. You can also find more wellness explainers on the Health Hub.