It's very difficult for me.

I'm not a person who is happy all the time... When I start feeling really down I try to reflect on all the positive things in my life. I often think about how fortunate I am compared to most people in the world.

I have a home, a job, electricity, food, clean water, etc. I have nothing to feel bad about!

Most people are not optimistic at all times . Everybody has his trough . I would seek out why I am not happy and rationalize it as much as I can . Almost every effect supposes a cause . So as a consequence , to find a solution is the key issue to improve your mood .

When I'm in a bad mood I clean and listen to the music out loud. It helps me take off the stressful thoughts. 

First of all i try to find out the reason why i'm in a bad mood)) Also usually i watch cartoons

Eat delicious food!