Brianna at The Book Vixen is hosting the Outdo Yourself Reading Challenge. All you do is try to read more books in 2013 than you did in 2012. This challenge runs from 1 January until 31 December, and you can sign up anytime between now and then.
Rereads are allowed, and books read for this challenge can count toward other challenges too. I'm trying for the level to "get my heart rate up," which means i'm going to try and read at least 1-5 more books in 2013 than I did in 2012.
Once I get close, I'll be tracking my progress here.