If you need to learn/gain advice, there is lots of it here...promise. Please let me start you out with:
A personal note: I have struggled with eating disorders since being a teen - doing things "right" (as so many told me) is not easy, won't lie... but it is more effective and leaves you feeling way more accomplished...I promise you. There is a huge sense of accomplishment that CAN come - and with you seeming so determined, I am betting you have the drive needed to also gain those accomplishments! You CAN do this right... it's IN YOU!
Another personal lesson: My daughter has struggled with anorexia. She is 5'1 and got down to 71Lbs WITH us trying to help. You don't even realize it's a problem, all you feel is exhilerated from "feeling" like you successfully beat your body... but hon... you aren't winning this way. She left herself open for some bad things, and it seriously makes me cry. She now has an immune-deficiency disease that has escalated in scary levels that was aggrevated by this, they fear later in time that her liver may be at risk. She is now on a LONG trail of trying to learn how to be healthy... but please, stop yourself before it becomes too late for those lasting effects.
Please know that I totally, personally, understand that "high" of feeling like you found the answer. We are usually the personalities that will tend to everyone's needs before our own, which means we look for a quick control method and feel so happy when we do. Personal experience, this isn't it. I am also still in learning process and would be happy to share information if you like to help. First off, per my nutrionalist, no adult should ever consume less than 1200 calories/day. This is where the strength and drive come into play though, they need to be healthy foods and proper servings. If you feel like the food will be too hard to stop eating, eat your planned amount and remove yourself from the house, go for a walk, etc... it will redirect your thoughts. Sorry for the long post, but just had to let you know... you aren't alone in your frustration... but even early on, it can do damage and YOU CAN succeed the right way
