When I ask my clients why they think so many people fear public speaking, they almost always talk about being judged.
Concern about being judged is a significant factor, but it is only part of it. Someone with strong self-belief tends to worry less about being judged - they might even relish it. But being judged when you have self-doubt can create intense anxiety.
I get huge satisfaction from seeing the relief, pride, and even joy that people experience when they complete a course and reflect on the progress they have made. See what others say for some inspiring stories.