Hi, I am am new to the forums but I am in the weight loss business and have helped many people lose weight. Sadly, there is no quick fix to losing weight, it is never an easy task to undertake. What you should be striving for is a change of attitude to food and look for that long term behavioural change. A female body (on average) has a recommended daily allowance of 2,000 calories. 3,500 calories over and above this makes 1lb of fat and conversely to lose 1 lb of fat you need to cut down by 3,500 on your calories.
1,000 calories a day, is considered a starvation diet and if you were to lower your calorie intake this far and sustain it over a number of weeks, you body would react by lowering your metabolism so that it does not die too soon. The human body is an intelligent organism, survival is its priority with procreation coming next. So, by lowering the metabolism it can get further on less food. But, if the metabolism is lowered then when you fall of your 1,000 calories a day wagon - and you will - then the body will "grab" all the calories it can, convert it to glucose for energy - continue to rely on the lowered metabolism and convert the rest of the glucose to fat and store it around your organs, middle, hips and bottom.
Therefore you need to be sensible, just cut down your calories intake to 1350-1500 calories a day, don't go too crazy exercising or you will run all the energy from your body and you are bound to compensate, just make sensible choices. 300 calories for breakfast, 300 for lunch and 750 calories for dinner.
The best advice on here that I have read is to create your own food diary, there are some great apps around for this, but use it, because at the end of the day, the human body recognises the energy balance and losing 1-2lbs a week is clinically proven over and over again to be the best way to sustain weight loss and keep it off for the long term.
Chooses the right foods - the human body needs 2-3 ounces of protein if you are female and 4-5 ounces if you are male, the rest of it goes down the loo, the body can't hold it or do anything else with it - a little may contribute to energy.
Starchy carbohydrates, pasta, rice, potatoes, peas, corn, cous cous etc contribute to your energy, the insulin produced by these carbs converts to glucose and if you don't use that energy up, it saves it for later as fat.
However, don't go on an all protein diet, this overloads your liver and kidneys and the extra fat creates atherosclerosis. Atherosclerosis (or arteriosclerotic vascular disease) is a condition where the arteries become narrowed and hardened due to an excessive build up of plaque around the artery wall. The disease disrupts the flow of blood around the body, posing serious cardiovascular complications.
So go for sensible weight loss 1-2lbs a week, practice portion control with something like the diet plate and do moderate exercise. Don't pop any pills that promise the earth, even some prescription drugs were taken off the market because of too many risks for heart attack and strokes, your health is precious so don't compromise it.