Why am I doing this again?

This is a post for the insecure writer’s support group.
I am currently editing a novella that is part non-fiction (aka my story), part spiritual, part fantasy.
Now I am nearing the end of a long process of writing/editing/sending to editor and editing again, I get mighty insecure.
A lot of the things I put down on the page are very personal and I would never have thought of telling my tale in this way until Ganesha showed up in my mind and the story started writing itself.
I think that a lot of writers struggle with the same doubt: what will people think of me when I publish this?
The funny thing is, that when I write poetry I don’t have such qualms. I share it freely and openly. But fiction? Brrrrr. I am going to go on and write it though. And soon it will be all beta read, finished and published, no matter how the knot in my stomach howls noooooo.