I have lost a lot of weight (50 pounds in 2 years) even though I don't exercise very much. I cut out most sweets. I eat only very small amounts of meat. I eat no fried foods. I limit breads and starches. And mostly, I just don't eat all that much volume of food. My stomach has shrunk enough that it doesn't bother me that much to eat less now. If you do a crash diet all at once, you most likely won't stick to it. It is better to make lifestyle changes that you can live with.