Instead of focusing on what you should avoid, instead focus on what you should get. Otherwise you'll focus on what you aren't "supposed" to have instead of focusing on the healthy stuff, and you'll think all day about what you shouldn't be having...
Focus on keeping it simple:
fruit: citrus
vegetables: carrots, spinach (buy it fresh and steam it), broccoli
lean meats: fish, chicken
healthy fats: unsalted almonds, straight avocado, natural peanut butter
fiber: low calorie/high fiber bread (other sources: spinach, broccoli, avocado, orange)