The Real Reason You Can't Stick to Anything (It's Not Willpower)

And for a few days – maybe even a couple of weeks – you do it. Then something disrupts the routine. Maybe it was a week of meetings at bad times. Your youngest waking up with a fever at 2am. Three days of ordering fast food because you're simply too exhausted to open the fridge. And just like that, the habit is gone. Not paused. Gone. And somewhere in the wreckage of another abandoned attempt, you file away a quiet conclusion: I'm just not the kind of person who sticks to things.

But that conclusion is worth challenging. Because the research suggests the reason you struggle to maintain new routines might have less to do with discipline and more to do with how you've been trying to build habits in the first place.

Most people approach habit change as a willpower problem. The thinking goes: if I just want it enough, if I'm disciplined enough, if I try hard enough, I'll make it stick. Which means every time a habit falls apart, it reads as a personal failure. Evidence of some fundamental flaw in your follow-through.

Willpower is a real thing, but research shows it's a terrible foundation for lasting behaviour change. After a full day of continuous cognitive demands – like decisions, interruptions, emotional labour, logistics – the brain starts defaulting to the path of least resistance. It isn't a moral failing. It's just how the brain manages load. And "push through with more willpower" is exactly the kind of demand it stops honouring when the going gets tough.

The problem isn't that you're not trying hard enough. The problem is that you're relying on motivation and willpower to do a job that your environment and your identity need to be doing instead.

BJ Fogg, a behaviour scientist at Stanford University and author of Tiny Habits (2019), spent years studying what makes behaviour change stick. His conclusion was pointed: motivation is an unreliable foundation for lasting habits. It fluctuates. It peaks at the beginning of any new attempt – which is why the first few days feel easy – and then fades, often exactly when life gets complicated.

Fogg's research points to something different. Lasting habits, he argues, are built on three things working together:

The behaviours that stick tend not to be the ones we feel most motivated to do. They're often the ones designed to require the least resistance.

This reframe matters a lot. If you've been setting ambitious habit goals – maybe thirty minutes of exercise, a full journalling practice, an hour of reading every night – and then blaming yourself when they collapse under the weight of a normal life, Fogg's work suggests the goal itself was the problem. Not you.

James Clear, author of Atomic Habits (2018), approaches the same territory from a different angle – and the two perspectives together are helpful.

Clear's central argument is that most people focus their habit-building efforts at the wrong level. They focus on outcomes – I want to lose weight, I want to be fitter, I want to read more – or on the specific actions themselves.

What they rarely focus on is identity: what kind of person am I trying to become, and what would that person do?

Identity and behaviour are in a constant feedback loop. Clear argues that every small action serves as accumulating evidence for the kind of person you're becoming. A person who exercises isn't someone who forces themselves to the gym through gritted teeth every morning. They're someone who has built up enough evidence that I'm the kind of person who moves their body regularly that the behaviour starts to feel natural rather than forced.

The failure loop – start strong, fade, quit, blame yourself – often keeps repeating because it never touches identity. The goal changes. The motivation fluctuates. But the underlying story about who you are stays the same.

This connects directly to something a lot of parents and professionals quietly know: the seasons of life where you most want to build better habits are also the seasons when you have the least available bandwidth for friction.

When your cognitive and emotional load is high – when you're managing a household, parenting young children, carrying work stress, and running on interrupted sleep – the bar for what actually gets done consistently drops very low. Ambitious habit goals that might have been sustainable in a quieter chapter of life simply don't survive contact with a demanding one.

That’s not a character problem. It's a design problem. A more sustainable approach might be to build habits that are small enough to survive the hard weeks – not just thrive in the easy ones.

Here's the practical takeaway (and it's more specific than "start small," which tends to mean different things to different people).

A smallest viable habit has three features, drawn from Fogg's research:

It's attached to something you already do. Fogg calls this an anchor – an existing behaviour that reliably happens in your day, regardless of how the day is going. Making coffee. Sitting down after the kids leave for school. Getting into bed. Brushing your teeth. The new habit piggybacks on the anchor: after I pour my morning coffee, I will sit down for two minutes without my phone. The anchor does the triggering work, so motivation doesn't have to.

It takes less than two minutes in its smallest form. Not "I'll do it even when I'm tired" – actually two minutes. Two minutes of stretching. One page of a book. Three deep breaths. Writing one sentence in a journal. The goal at this stage isn't the output. The goal is to build evidence for the identity. I'm the kind of person who moves their body. I'm the kind of person who reads. I'm the kind of person who takes a breath before the day starts. The habit can grow later. But it can only grow if it survives.

It has a moment of acknowledgement. Decades of behavioural psychology establish that an immediate positive signal wires the habit into the brain. So give yourself a tangible signal that you did it. Close the journal and take one deliberate, satisfying breath. Or mentally say the word done. It doesn't need to be a celebration – it just needs to be a definitive full stop that registers as a win.

So the actual question to sit with tonight isn't: what habit do I want to build? It's: what already reliably happens in my day, and what's the smallest possible version of the thing I want to do that I could attach to it right now?

Failing to build a habit doesn't mean you lack discipline. It usually just means you need a better system.

Research suggests willpower-based attempts are highly likely to struggle. They tend to fail under pressure – and pressure can be just a regular Tuesday. What Fogg and Clear's work points toward is something more forgiving and more honest: lasting behaviour change is less about motivation and more about design.

Small. Anchored. Identity-consistent. Survivable.

The quiet conclusion you might have been filing away – I'm just not the kind of person who sticks to things – isn't evidence. It's the result of using the wrong method, repeatedly, and blaming yourself for the outcome.

If you want to put this into practice, the 90-Day Identity Shift Journal in our store is designed to do exactly what this article describes – help you design a tiny habit, track the daily evidence, and build a clearer picture of who you're becoming. It includes an Identity Audit, a Tiny Habit Designer built on Fogg's formula, a 90-day tracker, and a troubleshooting guide for when life gets messy. You can find it in the StepChange Living store.

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Please note: This content is for educational purposes and is based on publicly available research and personal experience. It doesn't constitute professional psychological advice, coaching, or therapy, and shouldn't be used as a substitute for professional support. If you're experiencing significant mental health challenges or personal difficulties, please reach out to a qualified professional. See our Terms and Conditions for more information.