This site is full of people, like me who have done so well on CD (or equivalent) but perhaps have concentrated too much on the negative aspects of the diet rather than the positives: feeling cold, getting fed up, craving food, etc and have slowly stoppped the diet, perhaps thinking that it wouldn't have the inevitable consequences. Only, to kick themselves when they put on the weight and wish that they had stuck at it because now they have to go back to the beginning instead of being in maintenance etc.
Somewhere on here Icemoose has written a brilliant article about the differences in approach we have: there are those that see diets as prison, and are always looking for an escape, and others that see it as a means to an end (he puts it so much better than that), and we have to get the mindset right, stop seeing a diet as a punishment and see it for what it is; the means to freeing ourselves from the prison which we have created for ourselves by being overweight.
If we could bottle the enthusiasm, commitment and motivation that we have on day 1 we could easily get through any diet. But in truth, it's difficult to be that keen when what we really want is to eat like pigs but be slim and beautiful. The choice therefore is ours, short, sharp shock, or a lifetime of misery? I know which one I prefer, but it doesn't mean that this process is any easier for it.
In short, stick to the plan, and don't be like me, who now has to re-lose the weight all over again because I gave in too easily.