Breathe in, breathe out. Let some of the stress go. Don't be so hard on yourself. We all go through this phase although some have it more difficult than others. Just let everything sit for a spell. If you are in the quilt slump maybe it's a good time to relax and read about quilting. There are several good books about quilting - Like Marie Bostwicks books. Sit for awhile and admire your fabrics, pet them occasionally. Maybe making simpler quilts like stacked bricks or the coin quilts where matching seams is not an issue. When it comes to cutting --I often have issues like I see one measurement and then somehow my hand cuts something different. Like I need a 2 1/2" strip and I cut a 2". Don't give up. Re-purpose those wrong cuts into something else. After all the years I've been quilting I still look at each quilt as a new adventure. You never know what new masterpiece (and I say that term loosely) might come to you. Whatever you do -- DON'T give up. Don't sell or give away anything because just as soon as you've done all that you'll find your mojo again. So if you have to, close the door for awhile--just don't lock it. Good luck and remember you always have friends here on the board to vent to.