Eating less can be one way to create a calorie deficit, which is necessary for weight loss. In order to lose weight, you need to burn more calories than you consume. By eating less, you can reduce the number of calories you take in, which can help you create a calorie deficit. Additionally, it is also important to focus on the quality of the calories you're consuming and not just the quantity. Eating nutrient-dense, whole foods and avoiding processed foods, sugary drinks, and high-calorie snacks can help you achieve weight loss goals.