The scale is not necessarily your friend. You may want to lose fat – but the scale measures muscles, bone and internal organs as well. Gaining muscle is a good thing. Thus weight or BMI are imperfect ways to measure your progress. This is especially true if you’re just coming off a long period of semi-starvation (calorie counting), as your body may want to restore lost muscles etc. Starting weight training and gaining muscle can also hide your fat loss.
A 2015 study from Brown University found that you’re likely to have less belly fat if you have a high degree of “dispositional mindfulness” — where you’re naturally inclined to pay attention to your present thoughts and feelings. The researchers speculated that this kind of “everyday mindfulness” helps overcome the instinct to stock up on calories, which are not in short supply to use modern humans.