Resist the urge to grab a bar of chocolate or a donut when you feel low. Instead, try one of these good-for-you mood boosting foods. 

Spinach
Researchers have discovered that spinach has high levels of folic acid and magnesium, and both of these nutrients are directly linked to positive mood. A deficiency in either of these can trigger anxiety, as well as other harmful effects from stress. 

Bananas
A great quick snack, bananas are high in magnesium and potassium.  A deficiency in these two minerals can have a negative impact on your mood so eating a banana can actually help you feel more happy. 

Milk
A simple glass of milk is a great feel-good pick-me-up simply because of the calcium and tryptophan that it will add to your diet. Also, tryptophan helps your body produce serotonin which will boost your mood. 

Tuna and Salmon 
Both tuna and salmon have high amounts of omega-3 fatty acids. The brain uses this to help produce neurotransmitters which help repair brain cells that are needed for mood elevation.    

Oatmeal
Oatmeal contains high amounts of soluble fiber which has been proven to lower blood sugar levels, which in turn, also has the effect of reducing irritability from hunger. It provides ample energy needed to get through the day without feeling tired.