No one thinks they have enough time in the day! Do all your cooking in one batch on the weekend. Make enough for lunch and dinner for 5 or 6 days of the week. This free's up a TON of time in the week, and leaves you with one "play" day to eat something different.
Involve the family to make this more fun. Get the kids in the kitchen and involved in picking and shopping their meals. Make bigger batches and freeze them, so you can be prepared for weekends when the unexpected happens and you can't cook! This makes SP tracking a TON easier too!