You make it sound like it's good - it isn't. It's not something you enjoy, it's something you suffer. I'm trying to get out of that particular tar pit right now.

The real cure for Imposter Syndrome is objective, hard data concerning a) something real world that you are trying to accomplish and b) your actual relative ability compared to some social norm that matters for the ability being measured. The issue with Imposter Syndrome is that "social proof" is often not very good proof. There are forms of social proof which can be valuable but they are also often painful (a al Bill Gates quote about "your unhappiest customers" being your best source of learning). But a lot of that "rah rah, we think you are awesome and will thus kiss your butt and not give you meaningful feedback" stuff is something to very much worry about.

Cures are often unenjoyable — it doesn't make them less effective. Think of chemotherapy for example.