I always run late for work in the morning, so since I've started the SP plan, I make it a habit of making my lunch the night before. Usually, I'll cook something extra up for dinner, then set it aside for the next day's lunch. I know I'll stick to the plan that way.
Cook several chicken breasts up in advance and place them in individual baggies. These are great to add to a salad or to eat with brown rice or a baked potato.