We all screw up. Failure is such a bad word, but do you know it takes a lot of failure for a success? So instead of being worried about failing, or rejections, or someone hating the crap out of your book, find the fun in it. Try to find the fun in your stories, or what the person liked about it, or one thing you can laugh at. Find the Fun. I promise whatever crap gets thrown at you you won't melt down as easy.