When people think of direct action, the mind often goes to anarchists in bloc doing cool acts of sabotage. And that's an example, yes.

But direct action just means that you're acting directly to accomplish something. You're not begging, you're not bargaining, you're not voting in favour, you're just doing it. It's much simpler, and it's a lot more effective than the gaggle of intermediaries want you to realize.

Go do the thing.