Anger is my favorite emotion. When I say that, some people back away, as if they expect me to attack them. However, what they don't understand is that anger by itself is NOT dangerous. It's what you DO with the anger that is important.
For example, I use my anger for weight training. When I go into the gym, I lift heavy. I run hard. I climb until I can't climb anymore. And I use my anger for that. When I train others and they tell me they can't do something, I typically respond with, "Yes, you can. Get mad at it." Almost every single time, the person finds that yes, they CAN. You just have to tap into the right emotion that works for you. For some people, a zen-like calmness will work, but not for me. I gotta get mad at it to lift it, run it, or climb it. And I succeed every time.
I also use my anger to teach myself things. When someone trips my trigger in a bad way, I pay attention to it. I feel it. I ask myself why I feel it and I analyze it. But I don't dismiss it. I listen to it and sit with it as long as it takes to understand it and then, I let it go. I don't force it to leave me before I'm ready, though. Sometimes, it takes a few seconds. Sometimes, it can take days or even weeks. If I feel it, there's a reason, so I ask myself why.
I'm comfortable with "good" anger. I like how it feels. It's hot and fiery and full of crackling energy. My focus is sharp and on point. I don't use my anger to lash out or hurt others. If I am experiencing "negative" anger, I deal with it before I speak. Again, sometimes it's necessary to use your anger to get a point across, but contrary to popular belief, you can speak with anger, but still be kind. It's all in how you use it.
I'm all about the zen of anger.