How Do I Get Angry?

I am a 16 year old girl and I am asking you for advice. Lately I've become very angry and I'm starting to scream and hit the wall, which makes my hand huge, my knuckles turn blue and I can't feel them. Sometimes I'm so hot-tempered that I start swearing and pulling myself up. So my thought is how do I get angry For now, I've focused on one thing - to buy a punching bag and gloves to hit it instead of making holes in the wall or stepping on someone. I have been fighting a lot since I was a child, with boys who are older than me. I'm a little masculine. So what kind of punching bag should I take? I watched them, but there are different weights. Which will be better for me? I am about 1. 60 tall and I weigh 47 kg, and if my arm muscle matters, it is 27, which I don't know if it's good or not for a girl. I've always wanted to train something, but since I was little I want to train boxing!