A Revelation (Not totally necessary, but the "a" makes it correct. I guess.)

What's can help me to struggle deal with a bad mood/depression? An The answer is really primitive simple, it's music. When I listen to the music I can be free from problems and be in my made-up world.

I love music too. It's kept me sane when otherwise I'd just be silently sitting in my dark room, staring at the walls. :P

Your sentiment was short but sweet. Well done. :)