
Mentor story
·Balthazar · 41 sessions
“So many founders have a real product held back by blind spots they can't see from the inside. GrowthMentor is where I sit with them directly, one at a time.”
Karina Karn
Behavioral Marketing Strategist · Choice Decoded
United Kingdom · karinakarn.com ↗ · Jun 2026
The Work
Tell us about what you do and how you got here.
I'm a behavioral marketing strategist. My job is to translate brand strategy into consumer psychology, and I came into it through advertising and brand strategy, working with international brands along the way.
What I really understand are the triggers behind how consumers make decisions. I found a gap in the market there, and what I want to do is help founders with strategies that spot the blind spots in their business and position their brand in a better way for growth.
Why Mentor
What made you join GrowthMentor in the first place?
It comes back to that gap I kept seeing. So many founders have a real business and a real product, and they're held back by how they're positioning it, by blind spots they can't see from the inside. GrowthMentor is where I get to sit with those founders directly and work on exactly that, one at a time.
Who They Help
You translate brand strategy into consumer psychology. Where's the overlap, and why do so many marketers miss it?
When you have a business, you tend to hire a marketing agency to help with the marketing part, which is important. But what I noticed is that most marketers use a very generic, informative approach. They think about their own side, but they don't emphasize what the consumer really needs, the problems they have, the market trends, the psychology. They forget to put themselves in the consumer's shoes.
That's the whole game, because customers are emotional. We make something like 35,000 decisions in a single day, and the vast majority of them are emotional. So when you launch a product or a brand, you have to position yourself in a way that shows you understand the experiences your customers have had and what they actually need. That's how you create messaging that resonates with your target audience, and that's the point where you start to compete.
A Standout Session
Do you work from a framework, or is it more instinct?
I do use a framework. It's behavioral science: cognitive biases, behavioral biases, heuristics. It's complex to explain in a short call, but I try to keep it simple.
The core of it is this. There are biases in the way we make decisions, based on our experiences and our emotions, on what we want to feel. Once you understand that and you've processed it for yourself, you can launch a category of products built around those triggers. If you don't understand it beforehand, you launch a brand that has no resonance with your target, because that's impossible. You buy things you connect with emotionally. If there's no connection, there's nothing representative there for the customer to hold on to. I wrote a book about this side of it too.
Inside the Platform
What's an example of a brand that gets this right?
Coca-Cola. Think about why they're so powerful. They don't just sell a product, they create stories. And the reason that works is that people want to belong to a community, they want to feel more empowered. That emotional belonging is what the brand is really selling.
That's the thing I try to get founders to see. The product is one part of it, but the story you build around it, the feeling someone gets to belong to, is what makes it resonate.
What They Got Back
You sit between the founder and their customers. How do you get to the real psychology if you're not talking to consumers yourself?
I'm in the middle part. I'm the one advising and consulting the founders, my clients, and they're the ones who take the strategy to market. I have an outsourcing team that builds specific approaches when a client doesn't know how to direct it themselves, because sometimes you really do need direction.
So I don't interact with consumers directly much. But in about half the cases I need to collaborate closely with the client and go through the consumer reviews together, to see what's actually happening out there. Unless a founder happens to have a degree in psychology, working it out with their generic marketing team alone is close to impossible, so that's where I come in.
The Filter
A lot of this overlaps with the jobs-to-be-done idea. How do you find what's really driving a decision?
Yes, exactly that. The emotional jobs, the functional jobs, the social jobs behind the decisions we make. A lot of it is subconscious. Sometimes you buy something because it makes you look good to your friends or your family.
The information is all there if you have the eyes to see it. It lives in reviews, in support tickets, in sales conversations, in everything your customers already say in their own words. It's unstructured and qualitative, but it's there. Most of the work is learning to read it.
The Verdict
Three adjectives for GrowthMentor.
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