Well done! I went from 250 to 185 in eight months. The first two months were hell, but my body adjusted somewhat after that.
I simply counted all of my calories and subtracted 700 from the possible maximum every weekday. Weekends I still counted calories but ate up to the possible maximum. I did this to avoid sending my body into starvation mode, where fat loss ceases. 5x700=3500, or one pound a week, which is what doctors suggest for a healthy rate of weight loss. My results were slightly faster, which was fine with me.
Keeping it off is tough. I gained ten pounds after I got back from Army basic training, and I've been fluctuating between 190-195 ever since. I would like to be down to 185, but any less than that might compromise my muscle build.
For me, beer has always been the enemy. Cool, delicious beer. Damn.