"Diet" is a terrible word. If I could find the person who invented it, I would happily drill a bullet through their skull. I don't believe in diets, because when you go on the diet, you eventually go off the diet and you pack the same amount of weight again.(but this time, it becomes fat, and you lose muscle mass). And there is no overall change in attitude to food/life.
What you're doing is starving yourself, and that's a terrible thing to do. Skipping meals(ESPECIALLY breakfast) is not the answer, as even if you do lose weight it's not a healthy way of living(which is more important than weight). The simple way to lose as much weight as possible(AND stay healthy)? Cultivate healthy eating habits and exercise well. First off, eat 3 meals a day is what I would recommend. Second of all, make your proportion of vegetables/meats be roughly 2/3-1/3. I won't go in detail, but if you follow that guide, and also do some exercise most days(roughly 1 hour per day), you should start losing weight.(and even if you don't, it's waaay healthier than what you are doing currently.) On a side note, I would cut out the juice, and replace it with water, as it's a much healthier choice of drink.