Can someone make the voices in my head go away?

This topic right here comes up often in conversations, especially when talking to my friend and fellow author of Death by Chocolate, Kira Saito.

I finally finished 'My Bloody Valentines' ' first revision and the moment of excitement lasted but a moment as my head began to question every decision I have ever made throughout the story.
That nagging and annoying little voice taunts me, telling me how stupid my story is and making me want to highlight it all and press the Delete button and start over.

 Ugh! It is so frustrating...

I am now sitting by the computer, biting my nails as I wait for my Twin, Keren from Gothic Angel Book Reviews, to read and review it. I am so nervous that she may hate it. I am even more nervous of not being good enough, of failing at something I enjoy so much doing. Although enjoying it should suffice, it doesn't.

I downloaded a book onto Kindle a few days ago and as I waited for my children to get out of school today, I began to read it. I will not name the book nor the author (as I do not even know her) but the writting was poorly executed. I mean, it was pretty bad and repetitive! (which i hate) And so I am terrified that there will be someone like me thinking the same of my story/books and it freaks me out.

I guess it might get easier after you first publish something, but as for now, I get panic attacks when I send my work out for others to read (which I barely do.. Keren is the one that gets all of my stuff- poor Keren!)

This is exactly how I feel sometimes...

So my question to you is, how do you quiet the voices down? And are you ever happy with your story or do you try to edit it constantly like I do?

XOXO