I would go bonkers without food variety.

About the only that remains unchanged is that I have eggs for breakfast every morning.
What I do is on Saturday or Sunday, I plan every meal for the week. I look through my list of favorite recipes as well as going through my pinterest boards of recipes I want to try. Then I plug in the meals on the food tracker on sparkpeople, making adjustments as needed to make sure I hit all my macronutrient levels for each day. (For example, if I have two meals that are higher carb or lower protein, I put them on different days so it balances out.) I then make a shopping list, go to the supermarket, and then do some food prep (portioning meats, chopping veggies, etc.). It's about two or three hours of work but all the thinking/planning is done for the week so all I have to do each morning is check to see what's on the menu.