5.Sweet Potatoes
Sweet potatoes are a naturally sweet carb-rich food that is a stellar alternative to refined-flour sweets, which you inevitably crave when your mood is heading south. High-carb foods stimulate the release of serotonin, a brain chemical that regulates mood as well as appetite and sleep.
When your mood is under the weather, oven bake a batch of sweet potato fries and slowly savor them one at a time.