When my hubby was diagnosed as borderline diabetic he was so determined to change his diet and lose some weight he tracked his daily food intake on his laptop. He tracked everything from each calorie, carbohydrate, fat content and even the weights of the foods. This went on for a few months, he even had the information backed up on a Custom usb drive that he kept on his key chain.
He was so proud of the information he was keeping track of. Finally he was losing weight and after 9 weeks he got the hang of what to eat and what his limits were. He lost 60 pounds in one year and kept the weight off. He is no longer anywhere near diabetic.