Your story is familiar to me. I was diagnosed with Type II Diabetes in October 2008. 14 months later, I had lost 150 pounds and was off all medication. In 2010 I screwed around in the gym some, wasted a bunch of money on supplements, and eventually found my way over here. 2012 has been a good year. I gained a little more weight back than I planned, but competed and placed in a Strongman contest and am getting set up for a PL meet in February. Keep the faith, stay out of anything that doesn't get you towards where you want to be, and smash heavy weights.
Anastas Dimitar Martin