Failing

I'm digging my own grave
With my bare hands
My life I'm trying to save
But I'm failed by my own unsolicited demands
Let this be my epitaph
Lest I ever lay in it
Joy and sorrow in harmony on pulse-graph
When my soul and body are no longer interknit
"Eureka" my soul will sound
In a new place far below
Beneath the earth's stretch of ground
Far from the sky's glow
My hands are sore and battered
In my heart the devil preys
Dreams and hope are shuttered
By my dissolute ways
My life I have to rekindle
With success maybe I will rest
I shall not be feeble
Til I reach my level best