Homesick At Home...

For quite some time, I've had two homes. One with my mother in a town I spent most of my life in, the other with my father, in a town that, though I didn't live in it until recently, I had always considered my home. So no matter where I go...I'm always rather sad because I'm homesick for where I'm not. So how am I supposed to ever be content in a home unless I make both places not my home, and find a new home?