Maintain a good diet, I also like to wreck shop on a buffet once every couple of weeks
Back when I was a starving college student I lived on chicken thighs, cheap ground beef, eggs, whole milk, peanut butter, bananas, wheat bread, rice, pasta, potatoes, hamburger helper, and a few meals out a week.
Once I got done with school and started making decent money, I swore off hamburger helper and also started buying better cuts of beef - ground chuck, a few steaks and roasts, the occasional brisket, etc. I also gradually upgraded my choices in restaurants for the most part. But I still make the other above foods staples in my diet.