Sometimes people bully due to their own issues or insecurities. Don’t let someone else’s behavior affect how you view yourself. Try not to blame yourself for what other people choose to do.
Be proud of who you are. If someone is bullying you, that shows you who they are, not who you are.
If someone makes fun of you or teases you, they are the one who is choosing hurtful behavior. It isn’t your fault if they do this.
If someone is bullying you, consider putting yourself in their shoes and try to imagine why they’re acting this way. Often, you’ll find it has more to do with their own personal problems than it has to do with anything about you.