Read more positive things, listen to good music, watch a good comedy movie, find good people to talk with, eat better, sleep more. It's life and we can't control our mood, the most important is to be always in touch with people, surround yourself with good people, don't talk to negative people, don't listen to sad music, don't watch horror movies, keep creating, learn something new. You always can find a way to get rid of depression, read a bit about psychology, watch motivational videos on youtube. Try to comment more people and share your feedback everywhere, help people. Visit friends or relatives. Just be strong and fight that, you will feel better, I am sure. ☺

Here is a positive video for you :

Don't worry, be happy. ☺