We're analyzing poems in English right now and it's amazing how deep we get. A poem about dishes led to suicide and a poem about a bird led to the good and bad of humanity. Pretty trippy
I think the author isn't happy with his decision, I think after these lines he uses "sigh" like a sigh of despair, on the other hand it can even be a sigh of relief. But knowing Frost And his other works, like "Stopping by the woods on a snowy evening" is about suicide, I think he isn't happy with the path he took.