Metallica frontman James Hetfield spoke in an event called “Polar Music Prize” and explained his first and default reaction to most things in his life. He said:

I think the anger comes from family of origin, a feeling of not being heard, a feeling of manipulation, probably still a teenager in here somewhere that’s still sorting out some past issues — you know, parents, upbringing, things like that.

So there is that, but I think a lot of it is a defense mechanism — it is. Even when my kids scare me, or someone tickles me, I get angry. That’s my first reaction to most things, so it’s my default — I don’t know why, I don’t know why. Some people laugh ’cause they’re nervous; it’s just a thing. But I’ve learned to tap in to that.

There’s a big therapy in playing music and in writing music, and knowing that other people out there feel like me is very comforting. And the connection with the crowd is extremely important — they are the ‘fifth member,’ as we call them. And I enjoy watching them release their whatever it is as well.

I get to see that; that is part of the joy I get. They get to see us live, yeah — I get to see them transform and join together and become a family. It’s beautiful.

Click here to entire speech.