The first month without sugar is absolute bliss. But over time, you will probably start to loosen up and indulge in something sweet once in a while. I speak from my own experience. I am currently starting 5 month and I am no longer as strict as I was at the beginning, but there is a danger that one falls into the same habit as before. After this experience, sugar is on the same level as tobacco. Quitting is easy, but for many people it is impossible to last long. I had a craving for cigarettes even after several years. After 10 years did these cravings disappear completely.