It’s good you started thinking about this now. It requires advanced planning every day. I bring my lunch to work every day….and dinner when I have to work late. That means having everything on hand for preparation that morning or the night before. I bake a fish filet (salmon, mahi, trout etc.) and cook a large amount of two different vegetables. Salads are a good option too. (Unfortunately, I’ve had to back off them after a week’s worth created a ridiculously uncomfortable amount of bloating.) I also make an omelette for a mid-morning snack, plus I bring one or two hard boiled eggs for an afternoon snack. Drinking plenty of water helps to fill me up so that I don’t feel hungry. Also, if I feel I need a little something at the office, I make a cup of nettle tea. The first couple of weeks were an adjustment, but now it’s just part of my routine. Hope this helps. Good luck in September!