On My List... Way too many books!!!

I've always been the type of reader that can have at least 2 or 3 books on the go at once, but I think it's gotten a bit out of control - I've lost count of how many books I am reading. Maybe it's because I am not really invested in any one book I am reading or maybe because I am trying too hard to catch up on too many books.

Since I started really getting back into reading books in earnest over last few months (thanks to a great book I read last summer "The Book Whisperer" by Donalyn Miller), I find my bookshelves are a bit overrun both physically and virtually. I am trying to build a repertoire/collection of young readers and teen fiction as part of my "be in touch with what my students are or might be interested in reading".

I really want to start getting into actually reviewing books and doing more writing, but that means I have to actually finish a book or two! Maybe this is just my procrastinating nature rearing it's ugly head once again.

You can take a look at my virtual shelves here:

http://www.shelfari.com/mscarrsbookshelf
http://www.goodreads.com/mscarr
http://www.librarything.com/home/MarilynCarr

What do you do to keep focused and actually finish books instead of having a bunch on the go?