Dieting is the process of making changes to the foods and drinks you consume in order to achieve a specific health goal, such as weight loss, improved energy, or better overall health. There are many different diets and dietary approaches, and what works for one person may not work for another. Here are some general dieting tips that can help you make healthy changes to your eating habits: Focus on nutrient-dense whole foods: Choose foods that are high in nutrients and low in calories.