Everyone talks about coding, marketing, and fundraising. But after spending months building and launching solo, I think the most underrated skill is knowing what NOT to build.

Every feature request feels urgent. Every competitor launch makes you want to add "just one more thing." But the founders I've seen win are the ones who ruthlessly cut scope and stay focused.

For me, learning to say "that's a V2 problem" saved more time than any productivity tool.

What skill surprised you the most on your solo founder journey? Curious what others have found.