Eating to live, not living to eat.
St. Alphonsus Liguori wrote the following when explaining gluttony:
It is not a fault to feel pleasure in eating… But it is a defect to eat, like beasts, through the sole motive of sensual gratification, and without any reasonable object. Hence, the most delicious meats may be eaten without sin, if the motive is good and worthy of a rational creature; and, in taking the coarsest food through attachment to pleasure, there may be a fault.
Lord, make me eat to live and not be a glutton who lives to eat.
Smitten With Goodness 