Update on Vivian
As you can see from the picture above, there's a lot of note taking going on. Instead of seeing this as a highly efficient system, please recognize that the amount of apparent organization is in direct relation to my need to be organized, or I would be making many more mistakes than I am. Instead of rifling through several pages of pattern for different cable sections, I copied them all, cut them out, taped them onto the front and back of one page, and copied that. And then I wrote the main two lines of the pattern out at the bottom, so that I can follow the wrong side in order from right to left and the right side from left to right. And I color-coded the left and right cables. And wrote myself a reminder that left-hand cables hold two stitches to the front and right to the back. This is counter-intuitive for me: for some reason, my brain wants the right-leaning cable to have stitches held to the front. (An interesting psychological question. Perhaps because I'm right-handed and front seems more important than back....?)
This pattern is wonderfully engineered. You work the fronts and back at the same time on one long cable needle, and each row consists of a series of modular sections: cables, seed stitch, and purled areas. In most cases, the cabling on all of these individual units happens on the same row. So, in addition to my "next row" list, I have a section that tells me the next row to watch for where all of the left and right cabling happens. In between, you get about 6 rows of working the stitches as they appear. Very efficient and fairly easy to keep track of, especially if I write myself these reminder notes.
And I am persevering, after putting the sweater aside for a month or two. I've even taught myself to unweave a giant section, many rows long, to correct a cable twisting in the wrong direction.