Marcayah Carter knows what it’s like to be bullied. When she was 8, she got her first pair of glasses. A few kids teased her.

“They said I looked weird,” says Marcayah, who’s now 10. “It made me feel upset.”

Marcayah asked the kids to stop, and they did. But she knew that many other kids around the country still faced bullying. She wanted to help. Last year, she wrote and published a book called Don’t Be a Bully: Love Always.

Marcayah hopes her book reminds kids to be kind—and makes kids who have been bullied feel better.