Dear Princess Celestia,
Tonight, I felt the most joy I have ever felt in a long time. I helped a depressed subject of yours learn that no matter how others think of you, someone out there loves you for who you are. Lightning Dust felt that no one liked her because my good friend Rainbow Dash had bullied her earlier in the day, and turned everypony against her. But truly, all she needed was a little love. The ragged old Lighting Dust masked with tears was no more, and at the end of our chat, she was up and doing barrel rolls high in the rainy sky! So I suppose the friendship lesson here is, somewhere out there loves you for who you are, even if it seems like no one cares.
Your faithful student,
Twilight Sparkle