Can someone explain what this poem is saying ? "ambition's trail"?

Question

IF all the end of this continuous striving

Were simply to attain,

How poor would seem the planning and contriving

The endless urging and the hurried driving

Of body, heart and brain!

But ever in the wake of true achieving,

There shines this glowing trail--

Some other soul will be spurred on, conceiving,

New strength and hope, in its own power believing,

Because thou didst not fail.

Not thine alone the glory, nor the sorrow,

If thou doth miss the goal,

Undreamed of lives in many a far to-morrow

From thee their weakness or their force shall borrow--

On, on, ambitious soul.

(ella wheeler wilcox)

Answer 1

She is urging the reader to follow his dream and pursue his ideas and to never stop trying because future generations will learn from the work he has done whether he was successful himself or not. She praises his ambitious nature and his hard work.