One down; Four to go

One-by-One,
Like Dominoes I overcome;
Knock one hurdle down only to face another-
Slowly progressing towards the pure light at the end.
Slow motion,
I hear it crash; a Burden lifted-
One-by-One,
Like Dominoes I overcome;
I will prevail-
I will not fail;
Step aside and let me continue this path,
Each step one closer to the last.