Everyone is right! Do not avoid carbs or even certain kinds of carbs. Your body needs all of them for energy. You wouldn't avoid fruits and vegetables because they contain fiber right? Well, fiber is a type of carb!
Any and all diets will fail if you do not monitor your portions and combine it with some kind of exercise. So it's not necessarily what you eat, it's how much.
As to exercise, find something you like to do besides exercise your thumb on the remote control! Do you like to dance or rollerskate? How about playing sports? All of these are fun as well as good types of exercise!
Remember that your goal is to be healthy, not anorexic.