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Doctor Market Fit

Jeroen Coelen
Tens of paid subscribers

Tips and tactics to find PMF & GTM by an ex-founder turned PhD

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Substack
PricingFreemiumPublishesWeekly
Issues211Founded5 years agoLast Issue2 days ago
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Latest Issues

Find the right JTBD for your startup

Job-to-be-done is a powerful framework, but most people miss one thing: many JTBDs emerge in a single task. Which one is relevant for your startup? Let’s use an example. I go to the hardware store.

I buy an 8mm drill bit. Why? Because I ne...

2 days ago
2
4

Three modes of writing

“Wow, you are the first PhD I’ve met who, after six years, is still enthusiastic about his topic.”

A founder said this to me two weeks ago, in a get-to-know call. Until that comment, I hadn’t realised that my enthusiasm is somewhat unusu...

9 days ago
6
6

Dr. Jeffrey Funk on the AI bubble: “Where is the fit?”

Today’s guest: Jeffrey Funk. Jeffrey has spent more than 40 years studying how new technologies emerge and spread. He bundled his insights in his 2024 book: Unicorns, Hype, and Bubbles. For years he’s been one of the most persistent voices...

16 days ago
2

Sales drivers vs. targetable aspects

You’ve probably seen the meme: Prince (Now King) Charles and Ozzy Osbourne have the exact same persona. Male, born in 1948, raised in the UK, married twice, lives in a castle, wealthy and famous. I agree with the point.

The Prince Charles...

23 days ago
2

Can't pick your beachhead? Go for all three.

Whether you call it a target segment, beachhead, or ICP, I don’t care—growing in five of them is next to impossible. So common startup advice says you need to find focus: pick one segment and grow there.

You’ve heard it. I’ve shouted it fr...

a month ago
3

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  • Jeroen Coelen

    Mentored 1000+ founders. PhD on startups.

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