Officer Negative several tiers below

To think that I would be such a thing is absurd,
But I'm that monster
I lack the courage
To enter subterranean
Of my human heart
Several tiers below
The surface is a force
That demands to avoid pain
I make you a god
You determine my worth
The walls of prideful Independence
Reinforced with rods
Of anger don't fall down
I long to break through