How do I start working on anger issues?

I'm generally well seeming and then I can just lose it. I also sometimes glorify the anger issues in my head and often I can be incredibly, incredibly cold and cruel to someone who I feel deserves it. Often they never deserved this and I regret it later, I hurt people I love, I get in random fist fights and overall I'm charming and fun but have this weird looming anger in me that I want to let out sometimes. Also I'm aware that last sentence was a big cringe but it's how I feel.