He's not literally talking about a physical path, he's speaking of himself, the two paths are a metaphor, his personal life path, all of us have the free will to choose our own path towards our personal destiny in life. He speaks of equal similarities between the two paths, he chose the one maybe not considered to be the mainstream, therefore he was growing and searching, discovering and encompassing his true unique personal self, he did not choose the common path, therefore, taking a stand for his own true conviction and not being a follower in this life, he chose his own path, his own way of doing things, in the end, that's what made all the difference, he found his true destiny, by being true to himself. So there was no need to ever return and go back and walk the other path.