You need to take a break, remove the one thing from your schedule that is least important, then use it to relax.
You also deserve some free time if you've been eating a lot at work lately and are in a hurry. This is a sign that you are too busy. Enjoying food leisurely is one of the greatest pleasures in life.
Love makes mealtime a moment of rest. Practice mindful eating. Taste each bite and enjoy the aroma and texture of the food.
If you're usually in a rush for lunch at your desk, try taking it out and enjoying the afternoon with a coworker or friend.
Another sign that you need some free time is if you haven't had a casual chat with anyone other than work.