It implies a holistic view of life that were bigger then the sum of our parts organismically and sociologically.

organismically — invicta

Really?

"don't it make you sad to know that life, is more than who we are?" — TiredThinker

Nah, I ain't no solipsist or narcissist.

I assume it means maybe we invent stuff to be important when maybe our identity is actually all that really matters? But society forces us to work within the confines of priorities that may actually be hollow?

It is wrong to take it out of the context of the entirety, something that so many people do nowadays to argue that they are correct about something.
I have never heard the song, or at least have never paid attention to it while hearing, maybe posting the lyrics would make it easier to comment on how the write intended us to interpret the meaning.

Maybe. So what? A truism at most. Read Beckett or Kafka, Chekov or Houellebecq. :smirk:

Is it really obviously true though?

Unless one is naive, I think so.

So a person's identity is all that matters? Life isn't about more?

Songwriters often write words that scratch an unconscious itch, but they might not even be able to explain what the words mean themselves; speaking from experience. The meanings of good song lyrics are often left open to debate. I wouldn't hang on a song by the Goo Goo Dolls to tell you something deep about life. The song could do that for you, but that more depends on your own experience of life and your experience of the song.

So a person's identity is all that matters? — TiredThinker

A "person's identity" is the precondition of "all that matters" to her.

Life isn't about more?

IMO, "life" isn't "about" anything "more" than living-as-an-end-in-itself (like e.g. health, playing, caring, flourishing, etc).