How to change a girl in 9 weeks?

Im actually starting my first year of high school in august and im in the exact same position as you are. I always say im going to change but i dont. But this summer i found a solution: CONFIDENCE and DEDICATION. Its the best way possible to get started off. I've learned that its never too late to change. My advice to you would be plenty of excersise no matter if its just walking or riding a bike. Any type of excersise is good:) and then eating healthier is also a very important part (beware of proccessed foods like chips and crackers) Also whole grain is very good for you:) good luck this summer