Chicken and turkey contain several amino acids that help you to maintain a happy mood. The first is trytophan, which helps to make serotonin. Be careful though, over indulging can result in feelings of sluggishness. The second is tyrosine, which aids the body in coping with stress. It also works as a building block for norepinephrine and dopamine, two of the neurotransmitters that are responsible for controlling your mood.