This is a very close option to the green leafy vegetables option listed above, but the asparagus vegetable is usually a choice that you would pair with a healthy dinner. Known for their spears, asparagus contains tryptophan, which is an amino acid that the brain contains an abundance of. This amino acid helps to build serotonin in the brain, which helps to induce some of the happy feelings and emotions you get. This is a great way to help boost your mood and it is a healthy way to stay lean and fit. Consider pairing your salmon at dinner with green asparagus spears to help boost mood, fight depression, and improve your mental health.