The implication of your comment is you eat out 3 (or more/less) times a day, 7 days a week? Out of curiosity, what kinds of foods are you buying? How much would you say you spend a week on food?
In my early 20s I was somewhat like the OP - I would eat out for pretty much every meal. The trick to it was only eating twice a day, or once if you could manage it. The end result was actually fairly inexpensive depending upon where you were eating.
Of course, that was back when my body could handle this kind of abuse.
Of course, that was back when my body could handle this kind of abuse.