Hi I'm 5 4 and my start weight was over 15 stone, I'm now 10 stone so you can all do it, I eat 1200 now to lose the last half a stone which is the hardest, but I would suggest starting on more calories per day and then lowering if you need to, say if your weight loss plateus you could eat 200 cals less per day to ensure you continue losing, boots website have got a calculator that helps you work out how many calories you should eat, maybe try that, good luck xxx