I find this very odd

Its very strange that is seems when I tighten the belt on my nutrition and really watch what I eat I seem to struggle to loose weight according to the scale. Now I know the scale is not the bee all and end all but I do use it out of interest to see what my weight is as my clothes never seem to get tight so I can't use that as a tool. Yet, when I don't worry what I am eating and even have some chocolate and dessert thrown in here and there I loose weight. What is that all about? Does it mean maybe I shouldn't follow a plan and worry about what I am eating and just enjoy what I eat? When I don't worry about what I am eating there is definatley more carbs in my diet? Strange hey?