"She Used to Be Mine" by Sara Bareilles is a layered song.

But, I think that most of us can relate to the feeling of having lost a part of ourselves. Feeling whole, authentic, centered, at peace -- these are all poetic descriptors for being in a state of mental health and stability.

Wishing that for everyone reading this post and choosing to listen to this song. I think that we all realize that we can't always be happy or content every single moment of the day, but that isn't what the struggle for stability is about.