In this episode of The Builders Podcast, Matt Levenhagen sits down with William Holsten to explore the early journey behind his first product… and the business lessons that came from getting it wrong before getting it right.

What started as a simple, fun idea quickly turned into a real opportunity. Demand showed up. The product sold. Everything looked like it was working… until it wasn’t. Once the product hit real customers in real environments, the cracks started to show. Complaints rolled in, failures surfaced, and what felt like early success revealed deeper issues in execution and understanding the customer.

This episode is about those moments. The ones every builder faces at some point… where assumptions break, reality hits, and you’re forced to adapt. William shares what went wrong, what it cost, and what it taught him about building products that actually hold up in the real world.

If you’ve ever launched something, thought you had it figured out… and then learned otherwise… this one will feel familiar.

Key Takeaways

• Early success can hide deeper problems that only show up in real-world use
• The biggest lessons often come from what breaks, not what works
• You don’t truly understand your customer until you see how they operate day-to-day
• Assumptions in design and execution are where costly mistakes begin
• Listening to feedback is one thing… observing behavior is another
• Every builder goes through an “uh-oh” moment… what matters is how you respond