Scoff

Spinach

Leafy greens - like spinach and rocket lettuce - are rich sources of B vitamins, which are part of the assembly line that manufactures feel good hormones such as serotonin, dopamine, and norepinephrine. In fact, according to a study published in the Journal of Neuroscience Nursing, a lack of B6 can cause nervousness, irritability, and even depression.

Tuna sashimi or grilled salmon

A study in Finland found that people who eat more fish are 31 per cent less likely to suffer from depression. And skip sweet, simple carbs (like the rice with your sushi) - the inevitable sugar crash can deepen depression.

1 tbsp of ground flaxseed daily

Flax is the best source of alpha-linoleic acid, or ALA - a healthy fat that improves the workings of the cerebral cortex, the area of the brain that processes sensory information, including that of pleasure. To meet your quota, sprinkle it on salads or mix it into a smoothie or shake.

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White chocolate

White chocolate isn't technically chocolate, since it contains no cocoa solids. That means it also lacks the ability to stimulate the euphoria-inducing chemicals that real chocolate does, especially serotonin. If you're going to grab some chocolate, darker is better; more cacao means more happy chemicals and less sugar, which will eventually pull you down.