over a year later

I hope this finds everyone doing well and enjoying healthy, happy lives. I am checking in to share my progress and re-commit myself. My starting weight was 315 and I went into surgery at roughly 312. To date I am at 224. I was a pretty slow loser averaging 1-3 pounds a week from March 2011 until December 2011. I am thrilled with my loss and my life has changed dramatically for the better, but after several months of losing nothing I am trying to get back to basics and back on track. I fear that my body is done losing and I need some guidance getting back on track. Any words of wisdom out there?