Hi Ken. I was 93 kilograms when I was 16 and in high school. One year before graduating, I said enough is enough. I had back aches, breathing problems, fatigue, and luckily I did not develop diabetes, but I was close. I could feel all the nasty inside me. What did I do? I stopped eating all that is unnecessary for survival. My diet consisted of only water, salad, no oils at all, and only boiled chicken breast meat once in a while. Sometimes I was so desperate for change that I would just drink water.
Now you may ask, "How did you occupy yourself while on this diet? How did you control your will power?" The answer is, by playing WoW. That is right, I went on the diet during the summer, and 3 months of hardcore gaming was enough for me to drop from 93, to 70 kilograms. That is correct, I lost 23 kilograms. And when I looked at myself in the mirror, I wanted to cry. Why? Because I achieved this all by myself. I could see my lower jaw, my neck, I had a proper waistline, my breathing returned, my spine was freed. I did not go to any doctors, I took no medication. I did all this alone. When I returned to school, I was a new person.
You can do this aswell. But you need to start now. I was depressed aswell, it was twice as hard because I had to deal with name calling and constant remarks and teasing. But when you drop all that weight, the depression will go away, that I promise. Try what I did. I know it sounds extreme and unpractical (to some) but it worked for me. And I assure you that I am telling the truth. I remember so vividly that 93kg. Start now.
Best of luck to you.