What’s the theme of the poem?

What’s the theme of the poem?

 IN THIS MEDITATIVE POEM, THE SPEAKER TELLS US HOW THE COURSE OF HIS LIFE WAS DETERMINED WHEN HE CAME UPON TWO ROADS THAT DIVERGED IN A WOOD. FORCED TO CHOOSE, HE TOOK THE ONE LESS TRAVELED BY, AND THAT HAS MADE ALL THE DIFFERENCE.