I know this one too. So many ufos, plus projects I haven't started yet. I realised a while ago that I was feeling so overwhelmed that I wasn't doing anything and hid all but one project out of sight. Worked quite well, but then I needed the space where I'd stored the others, they came out again and now I'm back to feeling overwhelmed. But - as I wrote this, I just realised that I now have a bed with storage space underneath - hmm, may go and hide those ufos again, and see if just having one out will focus me again..
I also joined a ufo challenge this year and that's encouraged me to finish 3 or 4, but I'll be nowhere near 12 by December.