Lean startup

Hey Indie Hackers!

I’m working on a tool to help generate and validate business ideas using Lean Startup principles (think problem interviews, MVP testing, etc.).

For those familiar with Lean Startup:

What’s been your biggest lesson or surprise while applying it?

Any pitfalls to avoid during validation?

For those new to it: What’s holding you back from trying it?

Would love your insights—especially if you’ve struggled with early-stage validation!