Welcome back and boy, do I hear you on the complacency thing. One thing I have figured out (in my head, at least) is that I do not simply have to work to stay sober, I have to work to stay MOTIVATED to stay sober, if that makes sense.
I had five months sober this summer, now I have one week.
Good for you for coming back!
Onward and upward to a sober 2014!