How to lose 100 pounds????

I am the biggest I have ever been, and I've tried losing weight for a couple of years with different diets and workout plans but nothing has stuck. My current weight is around 285-300 lbs; my height is 5'6, and I am a 23-year-old woman. For the last year, I have not been very active at all, but I have a... show more I am the biggest I have ever been, and I've tried losing weight for a couple of years with different diets and workout plans but nothing has stuck. My current weight is around 285-300 lbs; my height is 5'6, and I am a 23-year-old woman. For the last year, I have not been very active at all, but I have a very athletic background and plan to start going back to the gym. I am also very excited and re-motivated to lose weight as I have been accepted into a really great law school. My goal is to lose 90-100 lbs before then (3.5 months) and I'm wondering if this is possible and how it can be achieved? I'm really not sure what the best diet for my body is (my body fat is distributed very proportionately, not just one concentrated area; Idk if this information helps) I have tried soo many different diet plans and end up restarting or changing it for whatever reasons. I've tried the alkaline diet, protein diet, juice/smoothie diet, etc... and have not been able to sustain these diets even with weight loss success and I always gain it back. I know my biggest problem is definitely food, so since last week I cut out fast food, I tried to rationalize by only having one meal a day if I ordered food (which was frequently) anyways I came to the realization that is was bad for my body, mental health, and budget. Any and all advice is welcomed and appreciated, thanks in advance.
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