I am so happy for you! The job corp will be a good change for you! I almost joined job corp when I was your age, now I wish I would have done it. But, my Mom didn't want me to go, and I was not strong enough to stand up to her at the time.... so, I didn't go... In a way, I'm glad I didn't go, becuase it was not long after this that I met someone who I loved very dearly, someone who changed my life. He passed away a few years ago, but had I gone to the job corp, I would probably never have met him at all... That would have been a pity and a shame..
Anyway, way to go for trying to control your eating habits!
That is actually the toughest part of this weight loss process. Once you have that licked, you know you are on your way. Start out lowering your calories to below 2,000 a day (I aim for 1,500 a day) and take a 30 min. walk a day, and the pounds will start falling off, especially if you limit your carb intake (bread, rice, pasta, potatoes, etc...), and eat more lean protien, fruits and veggies.... After a few weeks, once all junk is out of your system, your body will feel so much better....