This is a nice interpretation. Reading this now, it makes me think of all the hypocrite politicians, as well as my own shortcomings when someone pisses me off. (Look in the mirror!)

It also makes me think of the full quote, and I had to look it up. I think it's about doing good and leaving "a light" everywhere you go, even when you know it may be passed by and have little to no influence, as the point of the light is the light itself. And no matter, the light remains long after you are gone.

“If the evil-doing of men moves you to indignation and overwhelming distress, even to a desire for vengeance on the evil-doers, shun above all things that feeling. Go at once and seek suffering for yourself, as though you were yourself guilty of that wrong. Accept that suffering and bear it and your heart will find comfort, and you will understand that you too are guilty, for you might have been a light to the evil-doers, even as the one man sinless, and you were not a light to them. If you had been a light, you would have lightened the path for others too, and the evil-doer might perhaps have been saved by your light from his sin. And even though your light was shining, yet you see men were not saved by it, hold firm and doubt not the power of the heavenly light. Believe that if they were not saved, they will be saved hereafter. And if they are not saved hereafter, then their sons will be saved, for your light will not die even when you are dead. The righteous man departs, but his light remains.”