That looks like some of my diet attempts when I was younger - not enough food. I estimate the calories to be:
Breakfast: I piece of white bread with enough butter to scrap over one side of it.
150 calories
Lunch: Sandwich(turkey, onions, lettuce, 2 slices of cheese and spicy mustard) about a cup and a half of salad with ranch dressing, and half pint of chocolate milk.
400 calories
Dinner: I medium piece of bonless skinless chicken and half cup of peas.
300 calories
Snack: One bag of microwave popcorn
100 calories
about a 1000 calories
This is for life, you need to be able to stick to this. In my experience, if I restricted too much, I binged. Binging made me feel bad. I felt like an out of control loser most of my dieting life.
I was finally successful when I started eating. I stopped binging.
Sample menu with 1600 calories
Breakfast: 2 pieces of whole grain toast, 1 tbs natural peanut butter 300 calories
snack - cup of plain fat free yogurt, 6 oz raspberries 150 calories
Lunch: Sandwich(turkey, onions, lettuce, 2 slices of cheese and spicy mustard) about a cup and a half of salad with ranch dressing, and half pint of chocolate milk. this is fine (try to skip the ranch, go for low fat or put it on the side, skip the chocolate milk, drink water) 300 calories
Snack - carrot sticks/sugar snap peas, 1/4 cup hummus 200 calories
Dinner: I medium piece of bonless skinless chicken, 1 cup peas, 1/2 cup whole wheat couscous 400 calories
Snack: baked apple with 1/2 cup blueberries - 150 calories
I started dieting in high school by just not eating very much, I ended up eventually gaining more weight. I wish someone had told me back then the secret to long term successful weight loss was eating enough foods to keep me happy and satisfied. Eat less bad foods, eat more good foods, exercise! Don't starve yourself.