Once again things are out of control. I had this problem last year as well. I actually managed to finish most of the books in those piles by the end of the year, and I thought I would not be doing this sort it thing again. Obviously I didn't learn, or actually in my case I can't say no to a new book. Normally I don't mind having more than a few started, but even I admit there are a few too many in those piles. If you look at my sidebar you can see links to most of what I have started, and there are a few that I never bothered to add to my reading list, since the list is already too long.
So now the question. Do I go through the piles and pull out the books I haven't been reading or have barely started and put them back on the TBR pile for some other time? I hate doing that as I tend to not pick them up anytime soon. Or once again do I just read my way through? That means, of course, not starting anything new until the piles are more manageable. But I have several new library books that look so good....If nothing else, I have found that I am quite good at multitasking these days!