I don't know if this is much use. They're serialising Monica Seles book in the Sunday Times, and she's quite interesting on her attitude to food and how she changed it. Basically she ballooned after she got stabbed by the lunatic, which began a really bad relationship with food. I actually found it worth reading.
My own 'fighting weight' in my early-mid twenties was just around 9 stone 3, which I was more or less happy with. These days, I'm just aiming to get under 10 and see what happens. However, my food problems are related to depression - I comfort eat rubbish, which is why I've shot up even more recently. But now I'm feeling happier and more settled, I feel ready to sort this out with both a diet and the gym. But I agree with Monica that it's actually about changing mt attitude than simply just dieting. Often easier said than done, but I guess it's worth a shot.
Good luck to us all.