Monotone Proof/ Full Circle:

The problem is that my voice sucks.
My voice sucks because I don't practice.
I don't practice because I don't care.
I don't care although I should care.
I should care because it affects my music
It affects my music because the piano part's good but the voice isn't.
The piano part's good because I practice that.
I practice that because I've given up on singing.
I've given up singing because my voice sucks.

So there you go.