This is my favorite among all the stanzas of this great poem. For me it expresses that each incarnation is about experience and not what humans call success.

Regarding "steady as she goes" and the related stanzas that preceded that line, I immediately thought of a great piece that Maria Rattray wrote last weekend, https://medium.com/illumination/the-hare-and-the-tortoise-is-this-a-simple-kids-story-about-speed-6b2b1fca548a. subtitled Or is there an allegorical thread, that speaks more of how we humans live our lives? I think you will enjoy it and the long comment I left therein, based on my recent read of Alan Arkin's Out of My Mind. https://medium.com/@marcus17043/wonderful-piece-maria-8f7a492e85a1