Hey! Have you seen a doctor for your weight problem? If not, you should get some blood work done, there might be a problem with your thyroid or some other issue.
The main thing to loosing weight is eating healthy. I'm sure you know that already though! I know it's tough to, but it's very healthy for your body. Exercising helps a lot also, I started taking hydroxycut 4-5 days ago and I feel a lot thinner already. I've lost about 4 lbs, but i've also been working out for 40 mins. A day and eating very heathy.
I know it's hard to get yourself motivated to work out/eat healthy, i've been in those stages myself. Try starting a journal or something, write down your goals for the day i.E. Drink so much water (mine is 64. Ounces) write down what you eat and how many calories, limit yourself to how many calories a day you want to eat, start out small with exercising and work yourself up. This is just what I do and it's been helping so much.
Feel free to pm me about questions or anything