Right
   "If your so-called friends urge you to do anything you know to be wrong, you be the one to make a stand for right, even if you stand alone. Have the moral courage to be a light for others to follow."
                                        Thomas S. Monson
                                   
What I think this quote means is that each and every one of us have the choice to stand up for what you know is right and go against what you know is wrong. If  an acquaintance of yours tries to urge you to doing something you know is wrong you have to say "NO" and encourage others to choose the right. Even if you stand alone you will still be a CTR person. You need to be a leader rather than a follower, you need to show that you would not be following their bad example, and their interpretation of good while choosing the right.  Thomas S. Monson's quote should be something you should carry around your head instead of just forgetting about it because that same thing could happen to you and you can either choose the wrong or the right. "Have the moral courage to be a light for others to follow," means that you  should be the  good example that everyone can follow.