Ask HN: Unexpected Lessons from Building a Startup?

I'm fascinated by the countless stories and lessons learned by those who've ventured into building their own startups. Whether it's a surprising insight about your market, a technical challenge that led to an innovative solution, or an unexpected twist in your journey, I'd love to hear about it.

What was the most unexpected thing you learned while building your startup? How did it change your approach or perspective?

Share your stories, big or small—sometimes the most unexpected lessons are the ones that stick with us the most!