Daily Food Journal
A food diary is a very effective tool, because you can use it to help you determine if your current eating habits are healthy. A food diary will help you understand where your diet goes wrong and can reveal your calorie intake, so you know if you are getting too many or too few calories.
It can also help you know if you are getting enough fruits, vegetables, whole grains and healthy proteins each day and help you keep your carb-fat-protein ratios in healthy proportions.
For people suffering from chronic illnesses like fibromyalgia or migraines, it is a useful tool in identifying what some of the trigger foods may be. Used in conjunction with an elimination diet (a 2-3 week eating program where you remove common trigger food groups from your diet and slowly start to add them back in again), food journals can be a powerful tool for preventing or controlling flare ups.