Publish the thing you would respect someone else for having the courage to publish.

You are usually generous toward other people’s brave attempts and harsh toward your own. Applying your own standard for others to yourself is a quick way to see whether the hesitation is warranted. If you would admire someone else for putting this out, that is a reasonable verdict on the work.

Before withholding something, ask what you would think if a peer published it. If the answer is respect, publish. Your internal critic is not applying a consistent standard.