I'm not sure what your daily eating habits are, but a simple tip is to quit soda for water, It's a small step, but I've found it makes a noticeable difference. You'll consume less calories from quitting soda, plus I've found it makes you want to eat less overall.
Also, try to eat more vegetables during meals to help fill you up. For example, instead of 3 pieces of chicken for dinner, maybe have 2 pieces and 3 cups of salad to fill you up. Salads have incredibly low calories and are really cheap. I've found Costco sells Ready Pac Garden Salads for around $2 for 3lbs, and 3 cups is only 15 c