54 Days left till summer!

So, I need to lose right around 3 lbs per week to get to my goal weight of 145 by June 20, 2010. Can it be done? I think it can on low-carb and watching my calorie intake! I have been feeling really weak food-wise today. Although, I have not given in... for some reason I still feel bad about myself. Today I feel like I have lost 20 lbs and have barely made a dent in my fat body which is sad. It makes this task seem much more daunting. But, I am not going to give up! Where does giving up get me? Back to my old fatter self, low self-esteem and much self-hatred. I don't want that. I would rather be miserable and thinner than miserable and not trying at all.