I have decided to treat sadness as an illusion on the other side of happiness.
Regardless of whether or not I'm bipolar as I think I may very well be, it was very easy for me to learn that the main difference between myself when I'm happy and myself when I'm sad is perspective.
When I was sad, I could only see the negative in my life. I totally ignored the things that made me happy, or could make me happy. However, without any aspect of my life changing at all, I can become very happy by simply focusing on even the smallest sources of happiness in my day. It's not easy, but it's possible! I prove it to myself every time I have a mood swing.
So, if my mood is merely a reflection of whatever is on my mind, I can control my mood by intentionally blinding myself to my problems. I can break the illusion of sadness by adjusting the mirrors, so to speak!
A note of importance: This is easier said than done. I'm not yet sure whether I will be able to do this with any sure success...but it's definitely worth trying. I will probably mention this again someday.
There was a dream that I dreamed, and that dream was that the illusion of sadness would be broken for good.