To be creative you need first to work from your own.
Regardless of what you are obliged to do following the rules or needs of your profession, directions of your superiors, etc., even if your creativity is always connected with your professional life, you need to love what you do and have a passion to do more and better.
If you don't like your occupation, at least try in your free hours to let yourself be filled with thoughts and activities able to stimulate your attention and absorb you enough to forget about food.
Do you like music? That's not enough, you need to be excited! Listen to music you really love, if you are to use it also as a distraction from eating.
Go for a walk to let the openness comfort you! Choose books that excite you, watch movies that won't let you think about anything else.
The more interesting and exciting your life is, the less you will be thinking of food, and your gluttony will be defeated easily, without even trying!