I hurt myself when I get frustrated -- Advice needed.

Hi from the title OBVIOUSLY that's not good, and usually I simply bite myself- but this time I went too far and did something worse. Its becoming more and more of a problem, especially if I'm at work. It just builds up though, like a chaotic energy and if I don't hurt myself, I just start slamming shit around or purposefully breaking stuff. I just need to know if anyone has struggled with this and what they have done to help that feeling and impulse/energy. I promised my partner I wouldn't hurt myself the way I did and I broke that promise, it's not healthy for myself either. No matter what form I'm doing it in I'm still harming myself at the end of the day.