Adding to my post from yesterday, I think I understood why in the past I would loose some weight, then settle and ultimately take some pounds back: it is because I felt too comfortable in my clothes... my XL clothes!
It totally makes sense: I look at myself in the morning, naked, and I think: wow I need to loose weight. But then, throughout the whole day I am wearing ample clothes that actually make me fell quite all right, if not thin, because when I loose weight, I float in them. So this sensation is not congruent with weight loss: why would I need to lose weight if I feel thin in my clothes?
Plan of action: shopping trip to the mall this week end and buy tighter t shirts, shirts and pair of trousers. And also buy clothes with my dream size to put in my wardrobe, so that they are ready to welcome my new body...