The real question for any diet plan is how it works over a lifetime. What percentage of people maintain their weight over 15 or twenty years, as opposed to people who use no plan at all.
There is no diet that is going to work if you eat whatever you want. Your example is doomed to be obese.
I have found Atkins relatively easy to follow. I do however feel weak when I get around quality pastries and good croisants! Every once in a while I indulge myself and endure the headaches and heartburn.