YES! I know EXACTLY what you mean! For YEARS I ate emotionally without realizing that I was doing it! I packed on a HUNDRED emotional pounds for all kinds of reasons!
You are really ahead of MY game in already KNOWING and making a conscious choice to NOT eat out of emotion. Good for you!
I also want to congratulate you for realizing that stuffing food in your mouth is not the answer when you are feeling down and sad. It took me a lot longer to figure this out!
Have you been exercising less lately? I find that when I stop exercising for a few days due to being busy or sick or just plain L-A-Z-Y, I DO begin to get depressed easier. Exercise really DOES produce endorphins which give life a positive spin.
Hope that you will be feeling better very soon!