Some of the ways I know of to cure a fatty liver is to look into losing weight if you are overweight, your doctor may be able to help you with that if you ask for it. Other ways to cure or prevent a fatty liver are to have a healthy balanced died and to also exercise more if you can and are able to as well. 

If you speak to your doctor regarding curing a fatty liver though they will more than likely be able to help you with some kind of plan that you can stick to.