7 Product Lessons from 7 Mistakes I Made Trying to Start a Company

From a Product Leader turned Stanford MBA student

Katrine Tjoelsen
Product Coalition
Published in
6 min readJul 8, 2022

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“We have sales and a 70% retention rate,” I said to the 100+audience members, including a number of investors.

We were 5 months in and pitched our startup at a launch event at Stanford. We had poured every waking minute that week to prepare for the event. And things were going well, weren’t they? But the day after, my co-founders and I broke up.

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