What do diabetics should eat? Help!

From time to time, I read things about what diabetics should eat, but it's usually a recommendation for one or two foods, either expensive or seasonal. It doesn't help, I can't eat olive oil all day, or afford berries all year. I need to know what to eat for the entire day.

When it comes down to the core of what I eat during the day, I'm left clueless. I don't know what to eat at breakfast, lunch or diner.


What should I eat in an entire day? What are all foods that are good for diabetics and that I don't know about? How do I fill my entire day which such foods?

Usually, in the morning I eat two toasts, some cheese, a banana, a cup of coffee. Something similar during lunch, or a soup. Then for supper, a small piece of steak with potatoes and veggies.