Eat the Right Stuff
The more I investigate--both through research and nonscientific experiments with my own body--the more I realize how my diet affects my mood.
Here are the bad boys: nicotine, caffeine (it's a drug, which is why I'm addicted to it), alcohol, white flour and processed food (what you live on when you have kids who won't touch tofu and spinach); and sugar... that's a whole other article.
Here are the good guys: protein (eggs, milk, cheese, yogurt, meat, fish, chicken, seeds, nuts); complex starches (whole grains, beans, potatoes); vegetables (broccoli, spinach, squash); vitamins (vitamin B-complex, vitamins E and C, and a multivitamin); minerals (magnesium, calcium, and zinc); and omega-3 fatty acids.