I try to cook once a week - normally Saturdays - for the week. It is just my daughter and I and so what I do is I will make several meals at once. Then portion them into those seal and save bags. Stick them in the freezer and pull them out for lunch or dinner during the week.
You will need to keep a sink of soapy water ready to wash your dishes, and have some freezer bags ready to go. I save a lot of time at lunch and dinner - we just pick a meal, nuke it, and eat! The best part is clean up and we are both happy at mealtimes cuz we pick our frozen dinner!