a. Count your calories: You could use a calorie counting app to know exactly what is in the food you're eating while you're trying to plan how to lose weight. This way, you can keep an exact track of the calories and nutrients you're consuming. b. Reduce the number of your meals: Make it a habit to eat dinner early and avoid eating anything post dinner to help in digestion of your food. c. Cut down on condiments: Certain sauces and condiments are dense in calories. Avoid including those in your routine diet. d. Load up on veggies: Limit starchy carbs and added fats in your plate but load up on fresh and healthy veggies instead. e. Opt for lean proteins: Even while consuming protein dense foods, choose proteins that are lower in fat such as chicken and fish. f. Don't drink calories: Avoid sugary drinks, aerated drinks and sodas during the diet. Instead opt for water and zero-calorie drinks. Protein shakes are good too, but count them as a meal since they are quite filling.
You probably feel this way because if you cut junk food out completely and suddenly, your body is shocked by the sudden change. Also, junk food has a lot of sugar, which can make you feel energetic, so when you cut junk food out right away your body isn't used to not getting the sugar you used to consume. My advice is to take baby steps. Cut out candy/ice cream, then chips, then soda. etc. until you are consuming less or none at all.
I am on day four and I am very discouraged. I don't feel as if I am losing any weight at all. I encourage you to complete the seven days. Don't be too disappointed if you don't lose all ten pounds. Everybody and metabolism is different. Do be careful, however, to follow the diet exactly. Don't eat less food than is recommended in your effort to lose weight as that will throw off the diet's chemistry.