I need help "translating" this part into more simple english from the poem One Step at a Time by Joseph Morris. Here is the part:

Question

"He will stand upon Life's summit and will know that joy sublime which is his alone who dares to prove his soul."

Answer 1

As a person accomplishes a major achievement, he feels like he's on top of the world. He knows the great joy of one proves himself to himself.

http://www.inspirationalwordsofwisdom.com/one-step-at-a-time.html