Yea! It's those little victories that add up to reaching your goal. You should be proud. I remember the first time I decided not to eat when I knew full well that I wasn't hungry, just bored. I was so proud of myself for not stuffing my face. It can be very hard.
Well, having a burger and fries isn't the end of the world. As long as it fits into your overall plan/calorie range, it's probably not anything to be too concerned about. Good for you for not getting the large fry and not getting soda (that stuff's bad for so many reasons).