Cut most of the liquid calories from your diet by eliminating things like sodas, juices, and other sweetened beverages. Try drinking things like unsweetened tea, or sparkling water if you miss the carbonation of soda. Beverages generally don't make you feel very full, so you can easily consume far more calories than you intend if you regularly drink sugary drinks.
When you are eating out, it's a good idea to skip the salad dressing, or at least have it on the side. This will help you consume less dressing than if you had it on top of the salad. Keep yourself from abusing the salad dressing by lightly dipping the fork in it instead of spreading it all over your salad. Once you start to lose the weight, you will be grateful that you paid attention to your calorie consumption.