This is a very common problem most of us face including me. Especially after child birth, I find it very difficult to lose that belly. You must not give up, be focused and motivated to get back into the trousers you wore a year back. The thumb rule about losing weight anywhere is to minimise your calorie intake and exercise. There are certain tummy exercises you can follow. Another reason for you to get belly fat is if you are a regular beer drinker (beer belly). You need to reduce or stop consuming beer. Control your sweet tooth if you have one. Avoid sugary, sweet food and sodas.