The Forgotten Backpack

Tom takes the train to school. He is tired and forgets his backpack on the seat. When he arrives at school, he panics: "My backpack! My books! My phone!" He runs back to the station. A kind woman is holding his backpack. "Is this yours?" she asks with a smile. Tom is very happy. "Yes! Thank you so much!" Inside the backpack, he finds a small note: "Don't forget to smile today." Tom laughs. From that day, he always checks twice... and he always smiles on the train.