What do the members of the Goodman family sing about in the song "Just Another Day" in Act 1, Scene 1?

In the song "Just Another Day," which is up-tempo with a rock feel, dialogue and singing intercut the next morning, as the members of the family prepare for their day. Diana sings of how much she dislikes her family, Gabe sings about feeling fully alive, Natalie sings of how difficult it is to hang on, and Dan sings about how difficult it is to understand Diana.