well heres some tips that seem to work
1.A low fat diet,any dairy should be non or low fat
2.try cutting back on white flour ,white rice ,potatos,,carbos..ect.
3.Try adding a little running(even just a few feet at first)to your walking.you want to get your heart rate up to burn more calories.Run a little then walk keep increasing your running distance.You will feel you heart going faster
4.sugar and sweets cut back