Again, forget about the calories and focus on:
A. Lowering the sugar and sodium intake
B. cutting out Trans Fats at all costs (this is easy, don't eat processed foods. They're generally unhealthy for you anyways)
C. Monitor your Protein/Carb/Fat/Fiber levels.
It's really that easy.
If you want result, eliminate all soda drink (coke,Pepsi) and processed food as much you can. Read up on what carbonated soda drink do to your body.
Replace that with water/smoothie/juice. Buy a decent blender and start juicing. Buy vege/ fruits from farmer markets or organics if you have a chance.
I'm the opposite. I have very good metabolism so harder for me to maintain weight. Freshman year in h.s I only weight 105lbs. I'm fluctuate between 136-140lbs now. Last measured body fat is 18% so ideally I want to drop down to 12% and be at 145lbs. That is my ideal bf % and weight.