Poem by William Ernest Henley

I am reading a English poem. My English is basic and I don't understand well the poem. Can you help me? ( I am spanish)


Out of the night that covers me,
Black as the Pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul. The night is very dark and you are not afraid.

In the fell clutch of circumstance
I have not winced nor cried aloud.
Under the bludgeonings of chance
My head is bloody, but unbowed. The author was hurt deeply but did not kowtow to his fate.

Beyond this place of wrath and tears
Looms but the Horror of the shade,
And yet the menace of the years
Finds, and shall find, me unafraid.  Even the horrors of hell will not bend his will.

It matters not how strait the gate,
How charged with punishments the scroll.
I am the master of my fate:
I am the captain of my soul.         He is the master of his own destiny.