And the zen part?
I've spent almost as much time unknitting as knitting. First there was dropping stitches to unknit that went badly, resulting in either more rows to take out or in a hopeless tangle. Of course, I found this upsetting since without all the mistakes, I could have been almost done with the edging, rather than halfway through it. But after trying to ignore a "good enough" part of the pattern (an extra stitch, so I had to drop the yo and keep the extra k in its place), and even knitting several rows after it, for some reason I felt really good about making the decision to unknit and fix it. Perhaps this is in contrast to the horrible tangle, where I couldn't make things right. I was just happy it could be fixed (note to self: don't take up sewing or any other craft where ripping out is not an option).