Any views on this sonnet?

An excellent sonnet but I would expect nothing less from you. Having said that would you consider in the second stanza: 'At last adventure tugs me from my mood'? The original line jars on me for some reason but this is purely personal, it's your poem. Also would you consider: 'They say each journey's lit/With but a single step, so now go then,' These are just minor suggestions that come to my mind. I felt that 'lit' is more in keeping with the word and image of 'shadow' and adds the necessary contrast - shadow then moves the poem on to the ending.