The Road Not Taken by Robert Frost gives the reader an insight into the complexities of decision-making. Often, easily-made decisions lead to utter confusion as a person tries to justify the decision but worries about consequences. In choosing a thematic statement, it is important to consider the main intention of this poem, rather than its intricacies. Possibilities might include:
Where is the wisdom in choice if a person thinks he has made a poor choice?
Once you have made a choice, relish the possibilities rather than the missed opportunities.
It depends what you do after making a decision that will be life-changing; not necessarily the decision itself.
Frost reveals that there is sometimes little to choose from when making a choice: "Had worn them really about the same." The narrator "shall be telling this with a sigh" when he later recounts the decision he ultimately took and will remember his choice as having been "the one less traveled." It pleases him that "that has made all the difference" and, no doubt, he would have been able to make the same claim had he chosen the other path.
what is the best way to annotate the road not taken