Back in late 2000, someone commented on my being 'a bit chubby', so I asked around, and apparently I was 'not fat, but not skinny either'. So from then on and through most of 2001 I started to restrain myself from eating. I stopped eating lunches at school, and only at yoghurt when I got home, watching B&B (hey, I was 16).
Eventually people started telling me I had changed a LOT, and looking back from my school pictures from 2000 to 2001's copies, I look like a different person.
I felt much better, and I am in the process of doing the same thing now because I gained a bit of pudginess back in early 2004 (just for the sake of it).
My mum thought it was an unhealthy way to do it, but I was fine all the time and I'm not silly enough to become bullimic, etc... I'm very level headed, and it only took a couple of months to work.
Losing weight is only really a state of mind. But I relate to it being very hard at times.
Hint: If you're feeling really hungry, make yourself a cracker with cheese, or something light like that. It'll occupy you!