There's some really good suggestions here. I'm an emotional eater and also a mental health professional.
Finding an alternative behavior is definitely a good idea (I crochet because if my hands are busy then I can't be eating... but of course working out would be better
). However, a LITTLE BIT of DARK chocolate is also alright. It is full of antioxidants and releases endorphins. It's much better than having that candy bar, pie, or cookie. Keeping yourself from feeling deprived and treating yourself to a candle-lit bubble bath, a nice smelling candle, some 'me time', a hot tub or massage would be good. We're trying to comfort ourselves so we just need some other way of doing it.