In general it is a good thing to take stock and I use my review to work out where I'm heading as a writer, where perhaps I've gone off at a tangent (I would have liked to have placed my novel this year but should have been more proactive on this - target for next year now).
One thing remains constant though: I always wish I'd read more and plan to do so the following year! Maybe I'll get to do so in 2016.... watch this space.