So, what delivers actions? 

The short answer seems rather obvious: you.

The long answer delves into philosophical quandaries (such as "Who am I?") that are well beyond the scope of this piece. 

For the purpose of this piece, the focus will remain on an answer adjacent to the ultimate answer that is you: your habits. 

Your habits (responses repeated often enough that they require little conscious effort and shape who you are) deliver actions. And actions, in turn, deliver consistency. 

The good thing about habits is that they are highly influenceable. And to influence your habits towards a desired outcome, James Clear, author of Atomic Habits, offers an effective framework: 

As Clear points out, if a habit is not obvious, you will not know to do it. If a habit is not attractive, you will not feel much appeal towards putting it into action. If a habit is not easy, you will experience resistance to doing it. And if a habit is not satisfying, you will be less inclined to repeat it. 

And to repeat an action is precisely what you are after. 

For the sake of consistency, you want to repeat actions regularly. So, pay attention to your habits. Repeat effective ones long enough, and remarkable outcomes cease to be merely remarkable.

They become inevitable.