Why publishing your own work is the scariest part

"A Grave Mistake", my first novel, will be published soon. It has taken me a lot of time to write, edit, edit again, ask for opinions, edit once more, rince and repeat. I've had to cut some parts, add others, and I feel like the novel is finally ready to be properly read. It is time to publish it. And I am horrified. I am letting a part of myself roam the world, looking for readers and reviews. My novel is a part of my life, and I'll gladly accept any and all critique - but what if nobody reads it? What if everyone reads it? I think that, post-publishing, the scary part just started. This is not in my hands anymore - it's in the hands of the world, and I'm hoping I've done a good enough job.