This poem is from Autumn Leaves:

Anger that bubbles

Like a pot on a fire,

Feeds inward on itself.

Simmering hotter and hotter,

It feeds on misunderstanding, lies, innuendo,

Which fans passion into a white hot heat that no extinguisher can quench.

Finally, the fire burns itself out

To be replaced by cold, lifeless ashes

Of remorse, suspicion and questionable motives.

Mind barriers are then erected to protect

Self-righteous indignation of the experience,

Which no spoken or written communication can demolish.

Like a coral reef it builds,

Layer upon layer,

Hardened, fortified–impenetrable!

Such is Anger!

Then anger mellows into bitterness,

And once there, dies a cold, lonely death.