Boston, I've also been there, done that, only my first time ripping out came at the first quilt class I ever took, and my HST blocks blocks weren't squaring up. One of the other ladies took it upon herself to 'help' by taking apart my little blocks when we broke for lunch. Actually, she wasn't even sewing with the rest of us...she was 'observing', as she put it. Needless to say, the instructor asked her to 'not help so much' (yes, her actual words!), and the gal took off, never to be seen for the remainder of the class. Have I finished the quilt? Nope, not yet, but I certainly intend to!