I Know What to Eat- So Why Can't I Just Do It?
"I know what I should be doing. So why can't I just do it?"
I hear some version of this all the time in therapy.
People know they should probably drink more water. They know vegetables are good for them. They know moving their body is important. They know eating protein helps keep them satisfied. They may know exactly which habits make them feel better.
And yet, knowing all of that doesn’t necessarily mean they do it consistently.
My first response is usually pretty simple:
Because you’re human.
Knowing is not the same thing as doing
We live in a time when information is everywhere.
You can Google almost anything. You can listen to podcasts. You can read books. You can ask AI. You can download an app that tells you what to eat, when to move, how much water to drink and probably when you should go to bed.
If information were the missing ingredient, most of us would have solved our problems by now.
But insight alone doesn’t create behaviour change.
There is a huge space between knowing what to do and actually being able to do it consistently in your area life. And that space is where things get interesting.
There's a lot happening between knowing and doing
Imagine you decide that this week you're going to meal prep, exercise four times, drink enough water and stop eating mindlessly in the evening.
Great.
But then Monday happens.
You slept terribly.
Tuesday, work is insane.
Wednesday, one of your kids is sick.
Thursday, you're exhausted and your partner is having a difficult week.
Friday, your friends invite you for dinner.
Next week, maybe you're dealing with your period, a deadline, an aging parent, financial stress, a vacation, an injury or simply a season of life where your capacity is lower than usual.
Your behaviour exists inside all of that.
Your energy matters.
Your environment matters.
Your habits matter.
Your relationships matter.
Your stress matters.
Your values matter.
Your hormones can matter.
Your responsibilities matter.
Your current season of life matters.
For you to behave exactly the same way every single day, the conditions surrounding you would essentially have to stay exactly the same.
And they don't.
That isn't a failure of discipline. That's life.
This is where all-or-nothing thinking gets us into trouble
Food and weight are especially vulnerable to extremes.
One camp tells us we need to track everything: calories, macros, portions, steps, weight.
Another camp tells us that tracking anything is inherently unhealthy and that we should simply listen to our bodies.
I don't think either extreme leaves enough room for the individual person.
For some people, tracking can absolutely become rigid, anxiety-provoking or inappropriate. If numbers are contributing to disordered eating, obsessive behaviour or significant distress, that deserves to be taken seriously.
For someone else, information might simply be information.
Tracking for a period of time might make them realize they barely drink water during the day. Or that they regularly skip lunch and then wonder why they're ravenous at 8 p.m. Or that they feel considerably better when they eat more consistently.
The question isn't whether a particular tool is universally good or bad.
The better question is:
What happens to you when you use it?
Does it give you useful information?
Can you use it flexibly?
Can you go to brunch without tracking it and continue with your life?
Or does missing one meal suddenly make you feel like you've ruined the day?
Those are very different relationships with the exact same tool.
Sustainable change is usually much more boring than people want it to be
We tend to love dramatic solutions.
Monday morning.
New plan.
New app.
New diet.
Everything changes.
And for a little while, it can feel amazing.
But if something is going to become part of your life for years rather than three weeks, it usually needs to be much less exciting.
Slow. Simple. Flexible. Consistent.
It needs to survive a vacation.
It needs to survive a bad night's sleep.
It needs to survive dinner at a restaurant.
It needs to survive December.
It needs to survive the week when you're doing everything you can and still only have 60% of your usual capacity.
Because that's your actual life.
Maybe the problem isn't that you don't know enough
This is the part I really want people to understand.
If you repeatedly find yourself saying:
“I know better.”
“I should be able to do this.”
“Why can't I stick to anything?”
“Why do I keep doing this when I know what I should be doing?”
Maybe you don't need another person telling you what chicken breast contains or that you should drink water.
Maybe the more useful question is: What keeps happening between knowing and doing?
Maybe food has become one of the ways you regulate stress.
Maybe you've created rules that are so rigid that breaking one makes you feel like you've failed.
Maybe you're trying to follow a plan designed for a version of you who has significantly more time and energy than the version who actually exists right now.
Maybe you're trying to change ten behaviours simultaneously.
Maybe you're eating in response to emotions that you haven't learned how to tolerate differently yet.
Maybe you've spent so many years going on and off plans that you've stopped trusting yourself around food altogether.
Or maybe it's something completely different.
That's the work I'm increasingly interested in.
Not simply:
What are you eating?
But:
What is happening around the eating?
What were you feeling?
What happened beforehand?
What did you tell yourself?
What did you need?
What pattern keeps repeating?
And what would make the behaviour you actually want easier to choose?
Because once we understand that, we have something we can work with.
You are not supposed to execute perfectly
The goal isn't to create a life where you make the “right” choice 100% of the time.
I don't think that's realistic, and I don't think it's necessary.
The goal is to understand yourself well enough that food can become less complicated.
You can care about nutrition without needing perfection.
You can have goals without making your life revolve around them.
You can eat differently on vacation and not feel like you've fallen “off track.”
You can learn from numbers without necessarily becoming controlled by them.
You can enjoy food and still care about your health.
And you can have a difficult week without turning it into a difficult three months.
If you've spent years thinking, “I know what to do. Why can't I just do it?”
I want you to consider a different possibility.
Maybe the answer isn't that you need more willpower.
Maybe you need to understand the psychology sitting between what you know and what you actually do.
And once we understand that space, change can start to feel a lot more possible.