So who's made New Year's resolutions? It's not so much about the resolutions you make, but the ones you keep!
Getting back to blogging regularly is one of mine. I tend to go through phases where I'm really good and blog every week, but then lose focus for one reason or another. Consistency in blogging is the key as much as what you write.
One thing I find with many people I talk to is "what to write". There's many misconceptions out there about what a blog post should be. "Blog" is a shortened form of "weBLOG", so it's a log, or a journal.
It's now an older post, but I wrote about "Blogging for business" a few years back that may help.