Countering Impostor Syndrome Culture

Impostor syndrome is the combination of unrelenting standards for yourself, and feeling like you're an intellectual fake. There have been many talks that focus on changing the person who experiences impostor syndrome. But there are few resources for how the free software community can support people who experience impostor syndrome. How do we encourage new free software contributors who are struggling with impostor syndrome? How do we acknowledge the work of community members in a way that doesn't trigger the impostor syndrome feelings of "I'm not good enough"? How can free software communities change the culture that creates and perpetuates impostor syndrome?