Neither type 1 or type 2 diabetes can actually be cured at present, but there is a lot you can do to make type 2 more manageable. Especially if it is diagnosed early, changes in diet and lifestyle make a great difference.
Your doctor or a dietician will give you more detailed advice about this, but basically you will be advised to keep your weight at a healthy level by taking plenty of exercise and eating a balanced, healthy diet. This will include a lot of fruit and vegetables, and trying to minimise your intake of sugary, fatty foods. You need plenty of high-fibre carbohydrates which help you keep up your energy levels - bread from whole grains is a typical example.There are a lot of food products specially for diabetics now, which makes it much easier to eat healthily and still enjoy your food.
With more severe type 2 diabetes, it is sometimes necessary to take medication or injections, but again your doctor will be able to explain what is right in your case.