To lose fat, you must create a calorie deficit, which means you should eat fewer calories than your body burns in a day. A quick and easy way to create a caloric deficit is to stop drinking liquid calories. Soft drinks, fruit juices, fancy coffee drinks—all of these can be loaded with calories that don’t fill you up whatsoever. Your first order of business should be removing calorie-containing drinks from your diet, except for the occasional alcoholic drink.