We're going in hard on the DEEP realization I had recently about perfectionism and vulnerability. It all started with sending my next book out the beta readers and having people read it for the first time. The inner critic came in out of nowhere, first telling me that I should read it another time and work on it just a little more before letting anyone read it. Then it later sent me all these questions, like "What if people don't like it? What if they think it's self-indulgent or blaming? What if they don't think it's any good?" Really, though, below these questions was a deeper question. The REAL question that was driving my perfectionism and vulnerability - and I'm guessing that question will hit home for you as well.
Additional resources: