Prioritize health.
The first key to staying motivated: Keep your health goals in focus. You simply have more control over any health goal — eating more fruits and veggies, lowering calories, eating less fat — by packing your own lunch.
Prioritize budget.
Another benefit to remember, especially if you have specific saving or financial goals: Packing a lunch is nearly always cheaper than eating out
Prioritize taste.
Homemade lunch almost always tastes better.