I did two things initially - thought back to when I felt "perfect" - as much as I ever had, and asked my doctors.

Then as I lost all the weight, I took a good look in the mirror and realized we had all goofed. No one had taken into consideration the weight of all the loose skin I now had. I was gaunt, my collarbones jutted, you could see all the bones in my sternum and I was still 4 pounds above the goal weight I and the docs had chosen.

I failed maintenance, gained back over 110, but am heading back down to a goal weight I know I won't feel so gaunt at, and should still be a normal bmi - 160. If it's not, well screw 'em. It's going to be where I stop.