I like change. My theme would be Chanson D'Ennui. I hate being bored, and change makes things less boring. Of course, I'm easily bored so it doesn't take long for me to get bored again. I blame that on my ADHD.
There are a few others that could also be my theme song, such as Adventuring (tying into the whole "I'm always bored" aspect) and When You're On Your Own (because as much as I love time to myself, I also understand my need for the companionship of other people).