Theanine, which is present in green and black tea, reduces anxiety and will calm your nerves and make you happy.

So whenever you're feeling stressed because things aren't going your way, grab yourself a nice cup of tea to calm your nerves.

Outdoor play, gardening, or any activity that might bring contact with soil, trees, and plant life will increase the opportunity for exposure to microbial diversity.

If the activity is conducted in natural environments, it increases the likelihood that the individual will inhale natural phytoncides (aromatic chemicals secreted from trees and ornamental plants) that are associated with human stress reduction and immune system benefits. 

When you move your body, the level of serotonin increases -- serotonin is a neurotransmitter that is proven to help your brain to release endorphins, which are feel-good chemicals.

You don't need dancing classes; just turn on the music and shake your body.

Owning and caring for a pet will boost your mood and give you a good feeling and happiness.

If you can't own a pet, volunteer at your local shelter to get a dose of puppy love.

Reading will give your brain a work-out just like walking gives your body a work-out. 

Adventure stories also take you on the characters' adventures and give you an outlet for emotions found in the real world.

Listening to sad music can lead to beneficial emotional effects such as regulation of negative emotion and mood as well as consolation. 

Invest in things that give you good memories. Buy things like games you can play with friends or family when they come to visit.

Plan a long vacation, and take lots of pictures as forever memories. When you get stressed, just look at the pictures and you'll get a good mood boost.