Hi, and thanks for your question. The simple answer is to eat less and exercise more, but maybe a bit too simple. Modify your eating habits and begin a fitness programme of both aerobic exercise and strength work. If you are already exercising then it may be a case of increasing the intensity of the work that you are doing. It is much easier to give specific answers when you know the person you are talking/working with. There is no easy way to go about losing weight (the right way - no dieting), it takes a lot of hard work and commitment, but the results are ultimately worth it.
If you need any more info contact me at http://www.shiftitpersonaltraining.co.uk