Newsround has made a new programme called Being Me, which is all about how children feel about their body image.
We asked some children to tell us their stories through drawings.
Danny says he used to get picked on at school because of his nose and his face.
People used to tell him he was ugly and he became obsessed with taking pictures of himself and trying to take the perfect selfie.
Melissa used to feel pressured about the way she looked after reading magazines. They made her feel like she was bigger than other girls, and this affected her diet.
Hannah used to get teased about the colour of her hair, and found it hard to make friends at school.
People used to call her names, and it made her feel really sad.