This diet is not recommended to abuse. However, if you do not have will to refuse chocolate and cakes, you need to clean your body in other ways.
The best and most effective, of course, is a sport. However, if you are not really sporty, there are other ways to do it. Detoxifying day with green tea is perhaps what you.
The secret of this miracle diet is simple. Heat about half a liter of milk in a saucepan, pour half a spoon of green tea. After 10-15 minutes, strain out the solids. This drink can be taken whenever you are hungry. If you cannot go on liquids only, you can drink tea combined with a healthy diet. Have this drink in the morning before meals and at night before going to bed for 5 days in a row.
Consult your doctor or a nutrition expert to get more advise what is best for your body.