I have lost my cool and am afraid.

This 5.2 rated downclimb through several hundred meters of canyon narrows was expected to be easier. Ungracefully managing several problems i eventually get stuck on the wall. The lack of chimneying experience has quickly tired me. It does not help that wet muddy shoes do not stick well to the rock.

Letting myself fall into the opaque pool below i sink 2 heads underwater...not touching bottom. The water is frigid and shocks me alert.
Uncontrolled gasping. I make out for the bank to retrieve my pack but am refused access ― pushed back into the water by the slippery mud slope. Head keeps going under...i feel and look like a panicked fledging bird...this is not a swim but a desperate attempt to stay afloat.

Making it to the pool’s other end i claw myself out of it. Cold shock: uncontrolled shaking and shivering; clattering teeth with field of vision subject to the same staccato; body muscles in spasms that rapidly tetanize, refusing to obey (the
body shuts down the limbs to protect its core). Thoughts jumbled up, i cannot think straight. It is dark and cold. The wind blowing through the narrows brings in a stench that hits me long before i turn a corner and climb over the decomposing corpses of 2 heads of cattle stuck between the walls. A revulsing sight and smell that does nothing to help my confused mental.

These are the narrows of hell and i am in trouble: how many more climbing problems above frigid pools that i will be in no state of properly negotiating?
I have lost my cool and am afraid.