When you're working on making the world better by bringing new things into existence (products, art, companies), naivety is a strength.
Instead of listening to your voice of cynicism telling you why your idea won't work, you can go deeper and be what others might label as naive.
But to me, this isn't about being uncalculated in the risks you take. Rather, it's about believing in the thing you want to create and establishing a deep faith that you will overcome obstacles that may appear along the way.
Naivety helps you approach problems with a beginner's mind, which has proven to be effective when building anything.
Don't downplay your naivety, even if others try to. Acknowledge it as the strength it is, allowing you to make the leap to take action. Dare to try.