He had been separated from his friends while running from the caretaker. You would think a Marauder would be able to navigate the castle under stress. But here Wormtail was in some random classroom on the fifth floor. He leaned against the door, listening with bated breath for any noise in the hallway.
A shining light caught his eye. Movement in the corner. On closer inspection he realized it was his reflection in a mirror. He came closer to look at himself but enchanted mirrors don't show your true reflection.
He is tall, proud, and successful. He's surrounded by James and Sirius and Remus looking up at him in adoration. He's holding Alice's hand.
He was so fixated on this vision in the glass that he forgot where he was until a loud crash outside the door made him jump.
"WORMTAIL! COME ON!"
James was always there to save the day. And Peter always followed.
Prompt: Successful