Beyond that, I agree that your best bet would be cutting expenses. Cyclone laid out some good suggestions, but just generally pay very careful attention to where your money is going. Write down everything you buy for two months, every cent you spend. It's tedious but it will really enlighten you as to where your money is going. I feel like $80-100 a week for groceries is a lot for one person. Where does that money go? Are you buying high-end brands? Fancily packaged processed foods? Can you buy higher quantities of more filling foods that will work out more cheaply each serving? Things like that.
If you eat out - cut back on it or eliminate it all together (if your place of work has a kitchen with a fridge, microwave, toaster oven that's the best option)... it is amazing how much that adds up just in a week.