I did the cabbage soup diet with some success 'back in the day' -
Actually I like cabbage soup, and often make it for our little family.
But I think there are other, better, and easier ways to lose weight. I lost my weight using Richard Simmons Foodmover which is essentially the exchange program, and I am maintaining that weight loss the same way.
I suggest you find some way of losing weight that will work for you over the long haul - there are lots of diets and ways of healthy eating that would be a lot more fun than the proverbial cabbage soup diet.