How do you discipline a child with a bad temper who doesn’t know how to deal with their anger?

We have been having problems with our 7 year old daughter who’s angrier than average. Her extreme tantrums don’t seem normal to me.

She gets frustrated easily and likes to do things on her own. She gets really angry when she can’t do things right. But in all of this, she still refuses to accept help. She likes to build things but gets extremely angry when they fall apart.

When she gets hurt, she refuses to be comforted. If another kid interrupts her talking or doesn’t listen to her when she’s talking, she blows up. Sometimes she hits kids who make her angry or throws things at them. When I try to tell her to take deep breaths, she just screams in rage. I try to talk to her and show affection but she pushes me away.

How do I deal with her anger? It’s so frustrating not knowing how to handle her emotions.