I just try to eat only whole grains, little sugar, lots and lots of veggies and fruit, nuts everyday, avocado every week, olive oil. I don't drink milk, but at this point, I do have yogurt (I get the Greek yogurt), and cheese (full-fat). I cook tofu or the like two or three times a week (and have dinner leftovers for lunch, so really 4-6 meals). Oh yeah, lots of beans ... I loved me my beans even before I was vegetarian

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Really, I focus on quality (both for ingredients, and for the recipe as a whole - must be really tasty), and reasonable portions, eating slower and paying attention to whether I'm even hungry, and when I'm full but NEVER stuffed.