Crash diet anyone?

I know what you're all thinking - testing crash diets has been exhausted. Fearne Cotton is the latest celebrity to jump on the investigating-anorexia-and-crazy-diets band wagon. This is different I promise. I actually want to lose weight and want to test diets that really work rather than self righteously testing and condemning these diets whilst conveniently dropping tons of weight in the process. So I'm breaking myself in gently and starting with a sort of raw fruit and vegetable/negative calorie diet. I will mostly consume negative calorie fruits and vegetables but will chuck a few normal fruit and veg in, mainly because I already have some in my fridge. For anyone who doesn't know, negative calorie foods are foods which use more calories to digest than the food actually contains.
A bit of background information for you - I am a serial dieter. I diet constantly and my weight fluctuates all the time. I have lost almost two and a half stone since this time last year and have dropped almost five stone since I was eighteen. I weigh just over nine stone. The weight is not shifting anymore so I am taking drastic measures to ensure I reach my goal weight of eight stone.
I am about to eat some chopped up peppers as I haven't eaten anything yet and I have a salad of leaves and cherry tomatoes for lunch. I have a headache already.