"I yam what I am and that's all that I yam". "It is what it is and that's all that it is". It is? Are you very sure about that?

What it is is all that it will ever be can ever be? No way to change that expand it stretch it?

It is so DEFEATIST.

I yam what I yam.  Never gonna be anything more.

It is what it is. Never gonna be anything else.
Stuck in a rut of what is.