Analysis of Because I failed, shall I asperse the End

Because I failed, shall I asperse the End
With scorn or doubt, my failure to excuse;
'Gainst arduous Truth my feeble falseness use,
Like that worst foe, a vain splenetic friend?
Deem'st thou, self-amorous fool, the High will bend
If that thy utmost stature prove too small?
Though thou be dwarf, some other is more tall.
The End is fixed; have faith; the means will mend.
Failures but carve a pathway to success;
Our force is many, so our aim be one:
The foremost drop; on, those behind must press.
What boots my doing, so the deed be done?
Let my poor body lie beneath the breach:
I clomb and fell; who stand on me will reach.