avoid refined sugars,
practice and adhere to weight control, do some sort of exercise 60 minutes daily,
practice stress management, and get adequate sleep. These are all important in managing this illness, the most important, along with proper nutrition, is physical activity.
Besides watching sugar in your diet-- you also need to watch carbohydrates (starches) carefully too. For example-- things like breads, potatoes, pasta, crackers, etc.