Just try to fight the urge to pile more food onto the plate than necessary. Otherwise, it will defeat the purpose. Staying in control of your stress levels can lead to weight loss.
Too much stress leads to a higher a chance of accumulating fat around the midsection, due to the increased levels of cortisol - a hormone which stressful people tend to have in high amounts. Although you can't control everything that triggers your stress, you can control how you react to it.