top of page
All Posts


The Best Sales Lessons I Ever Learned Came from a Bakery, a DJ Booth, and a Soccer Pitch
The best sales lessons I've ever learned came from a Berlin baker, a DJ, a line cook, a soccer coach, and a bartender — not from a single sales book. A field guide to the sales wisdom hiding in everyday craft, plus some life advice for founders who are running on fumes.

Jens Koester
5 days ago7 min read


Nobody Tells You That Selling Your Own Startup Is Lonely. So I Will.
Nobody warns founders that selling your own product is lonely. That you'll be the only one in the room when the rejection lands. A sales consultant's honest diary of the 4pm doubt spiral, the ghosting, the awkward follow-up, and the Friday call that makes it all worth it. With a survival checklist for the hard days.

Jens Koester
May 246 min read


AI Will Not Save Your Sales Process. But It Will Expose It.
Every consultant is telling you to "balance AI with humans." Nobody is telling you which half is which. A startup sales consultant's honest take on what to actually automate in sales, what to never let AI touch, and the one-line test that decides every time. With a one-page checklist.

Jens Koester
May 176 min read


Your First 10 Customers Will Be Awkward, Slow, and Underpriced. That's the Job.
The first 10 customers aren't a marketing problem, they're a courage problem. A no-fluff field guide for founders who are tired of being told to "do things that don't scale," with a one-page checklist you can actually use this week. From a consultant who's worked with 500+ startups.

Jens Koester
May 106 min read
bottom of page