Why We Behave the Way We Do and Why Change Feels So Hard

This is a little longer than my usual blogs, so perhaps make yourself a cup of tea, get comfortable and settle in for a few minutes.

If there is one topic that sits underneath almost every health goal, every failed diet, every abandoned exercise programme and every promise to "start again on Monday", it is this one.

Understanding why we do what we do changes everything.

For years, I believed what so many people believe: that I lacked willpower, that I simply needed to try harder and that everyone else seemed to possess some secret discipline that I was missing. The more I learned about human behaviour, habits and the brain, the more I realised that most of us have been asking the wrong questions.

Instead of asking, "Why can't I stick to it?" we should be asking, "Why do I behave this way in the first place?", because behaviour is rarely random. There is almost always a reason.

Why do we behave the way we do?

Every behaviour serves a purpose, although that purpose isn't always obvious.

Sometimes it's straightforward: we eat because we're hungry, we sleep because we're tired and we exercise because we want to feel fitter. But many of our everyday behaviours have very little to do with logic. We snack because we're bored, scroll because we're avoiding something, pour a glass of wine because we've had a stressful day or skip exercise because we're mentally exhausted before we've even started.

Our brains are constantly looking for ways to save energy, reduce discomfort and solve problems as efficiently as possible. That isn't a flaw; it's exactly what they were designed to do. Over time, repeated behaviours become automatic. Think about driving home without remembering parts of the journey or brushing your teeth without consciously thinking about every movement. Your brain loves efficiency and the more often you repeat something, the less thought it requires.

That's wonderful when the habit serves you. It's much less helpful when the automatic behaviour is reaching for biscuits or a bag of chips every afternoon, staying up far too late drinking wine or telling yourself you'll start tomorrow.

Many of these patterns were created years ago. Some began in childhood, some developed during stressful periods and others simply evolved because they worked at the time. The important thing to understand is that your current habits aren't a reflection of your character. They're often the result of repetition, environment, emotion and circumstance.

Why is change so difficult?

This is probably the question I hear most often. "If I know what I should be doing, why can't I just do it?"

Knowledge and behaviour are not the same thing. Most people already know the basics of healthy living. We know we should eat more vegetables, move our bodies, sleep more, drink enough water and manage stress better. Knowing these things isn't usually the problem; living them consistently is.

Changing behaviour asks the brain to do something it naturally resists. It requires attention, energy, decision-making, repetition and often a willingness to tolerate temporary discomfort. Meanwhile, your existing habits are quietly running in the background because they've been practised hundreds or even thousands of times.

Imagine walking through a field where one path has been walked every day for years. The grass is worn flat, the route is obvious and you barely have to think about where you're going. Now imagine trying to create a completely new path through long grass. At first it's slow and awkward because you have to think about every step. That's what building a new habit feels like. The old path is still there, inviting you back, not because it's better but simply because it's easier.

This is also why motivation comes and goes. Motivation is wonderful when it's there, but it isn't designed to carry us every day. Life gets busy, stress increases, sleep suffers, hormones fluctuate, work becomes demanding and family needs us. If our healthy habits depend entirely on feeling motivated, they'll probably disappear whenever life becomes complicated.

And life always becomes complicated eventually.

The invisible forces shaping our behaviour

There are many things influencing our choices that we barely notice. Our environment, our routines, our emotions, our energy levels and even our beliefs about ourselves all play a part in the decisions we make each day.

If healthy food isn't visible, we're less likely to eat it. If biscuits are sitting on the kitchen counter, they'll probably disappear eventually. If we're running on four hours of sleep, we'll naturally crave quick energy and if we've spent years believing we're someone who "never sticks to anything", we'll often behave in ways that reinforce that story.

None of this means we're powerless. It simply means behaviour isn't happening in isolation. We're constantly responding to what's happening around us and within us, and the more we understand those influences, the more we can work with them instead of against them.

Why perfection keeps getting in the way

This is one of the biggest traps I see.

We decide to change everything at once: a new diet, daily exercise, earlier nights, no sugar, no alcohol, meditation every morning and meal prep every Sunday. It all sounds achievable when we're feeling motivated.

Then real life arrives.

We miss one workout, eat one takeaway or stay up too late, and suddenly the whole plan feels ruined. So we stop, not because we failed, but because perfection convinced us that anything less wasn't worth continuing.

Real change has never depended on perfection. It depends on returning, again and again, after life inevitably gets in the way. The people who create lasting change aren't perfect; they simply become very good at beginning again without turning one difficult day into a difficult month.

So how do we make healthier behaviours easier to repeat?

This is where everything starts to become more hopeful.

Rather than trying to force ourselves to be more disciplined, we can begin designing our lives so healthy choices become easier. We lower the barriers instead of raising our expectations.

Instead of aiming for an hour-long workout, we begin with ten minutes. Instead of promising to cook every meal from scratch, we prepare one healthy lunch. Instead of expecting ourselves to meditate for twenty minutes, we spend two minutes sitting quietly with a cup of tea before the day begins.

Small doesn't mean insignificant. It means repeatable and repeatable is where habits are built.

One question I often encourage clients to ask themselves is, "How can I make this easier?" Not easier forever, just easier to begin because beginning is usually the hardest part.

Become someone who practices, not someone who performs

One of the biggest mindset shifts we can make is to stop seeing healthy living as something we either succeed or fail at. Instead, see it as practice.

Some days you'll eat brilliantly and some days you'll order pizza. Some weeks you'll exercise consistently and some weeks life will get in the way. That doesn't erase everything you've built. Every healthy choice still counts, every walk still matters and every good night's sleep still helps.

Progress isn't lost simply because life happened.

The story you tell yourself matters

Our identity quietly shapes our behaviour.

If you constantly tell yourself, "I'm lazy," "I have no self-control," or "I always fail," your brain starts looking for evidence that those statements are true.

The encouraging news is that identities can change, not through positive affirmations alone, but through repeated evidence. Every healthy meal, every walk, every early night and every time you keep one small promise to yourself becomes a vote for the person you're becoming.

You aren't becoming a different person overnight. You're gradually becoming someone who does these things more often and that is how identities are built. Not in dramatic moments but on ordinary Tuesdays.

One final thought

If you've struggled to change in the past, I hope this gives you something far more valuable than another list of rules. I hope it gives you perspective.

Lasting change isn't about becoming a different person. It's about understanding the person you already are, understanding why your brain does what it does, learning how your habits have formed and creating an environment that supports the life you want instead of constantly fighting against it.

Most importantly, remember that change isn't something you either achieve or fail at. It's something you practise, one choice, one habit and one ordinary day at a time.

You don't need a perfect plan or endless motivation. You simply need a way of making the next healthy choice a little easier than the last and possibly a health coach to help you be accountable. Over time, those small choices begin to shape something much bigger.

They shape the person you're becoming.