O unfortunate one, if everyone turns back and no one accompanies you when you embark on a difficult path.

This couplet speaks to the profound feeling of loneliness when you're about to embark on a difficult journey. It paints a picture of being left behind, an 'unfortunate soul,' as everyone else retreats from a challenging path. It evokes the poignant reality of having to navigate a 'deep, arduous road' entirely on your own, without a single companion by your side. It’s a moment of solitude where you are confronted with the vastness of your task, knowing that no one will share the burden. It highlights the quiet strength required to face such isolation, or perhaps the sorrow of it.