Thank you all for your wonderful advice on my plotting conundrum. I've decided to take your suggestion to simply write my way through the woods and see where it takes me. This morning I opened my novel's file and began where I left off...and before I knew it, I'd quickly written two pages.
I'm still without clear direction on the plot, but I believe that will work itself out as I go along. It simply feels great to be writing again.
Another discovery. I've found that I write best first thing in the morning before I get to work on anything else. This week I've been working on a small freelance writing project and each day promised myself that I would get to my novel after I'd completed my other writing. Of course, the result was that by the time I'd finished with my work, I was too tired to contemplate facing the blank page. This morning I put my foot down and decided that I'd just write one page in the novel before starting my 'regular' work. One page turned into two and now I get to begin my day with a feeling of satisfaction, having already completed the work that means the most to me.
Thank you all, again, for your encouragement.