Be constantly aware of your fat intake.
Fat makes us gain weight because it's stored in the body far more easily than either carbohydrates or protein.  Fat is stored as fat.  Fat can be used as fuel, but it is first stored as additional fat.  Generally, if there is an inadequate supply of glucose (carbohydrates) the body will access that stored fat.  Fat, as said earlier, contains twice the number of calories than either carbohydrates or protein of the same weight.  The body burns the carbohydrate’s calories as fuel almost immediately, while the more calorie-dense fat burns slower and is more likely to be left over and stored.  Furthermore, it takes a lot of energy to turn carbohydrates and protein into flab--almost a quarter of carbohydrate calories are burned up in the conversion process alone.  Peter D. Vash, M.D., assistant clinical professor of medicine at the University of California--Los Angeles.  "The fat you eat is the fat you wear," he says. All of which is compounded by the fact that American women tend to get 38 to 40 percent of their calories from fat--double what most experts recommend.
We need some fat in our diets to maintain the proper functioning of our bodies; too little fat is almost as dangerous as too much.  However, hardly a person alive today is depriving themselves of anything by cutting way back on fat.  Fat is a risk factor for cardiovascular disease, diabetes, high blood pressure, stroke, some types of cancer, including that of the colon, and a barrage of other illnesses which are too numerous to list.  Since fats provide 9 calories of energy per gram, they are the most concentrated of the energy-producing nutrients.  Our bodies need only very small amounts. Fats play an important role in building the membranes that surround our cells and in helping blood to clot. Once digested and absorbed, fats help the body absorb certain vitamins. Fat stored in the body cushions vital organs and protects us from extreme cold and heat.  You need fat in your diet, but the right fat in the right amounts.
This is not a “low fat diet”.  We are simply teaching you that foods naturally containing fat are okay, but there is no need to ADD FAT to anything.  In that statement, we are assuming that you trim all excess fat off of the meat you consume, and try to purchase the leanest of meats when making your selections.  Since fat makes you fat, one of the most important things you can do for both weight loss and general health, is to limit the amount of fat that you eat.
By following the general guidelines above, you should be able to cut your fat content dramatically.