Speech is an action
All healthy speakers think when they speak.
They plan a statement on account of an aim.
This means that speech is always an action. (see specialist book)
We can also say that our body tension, voice and articulation are a result of our thinking.
Nevertheless, there are times in which the intentional appearance does not succeed.
What is the cause?
Habits and images can hide the real intention that we wanted to express.
To come back to the action full of intention, we have to make concrete decisions.
The surer I am about what my aim is, so knowing why I talk, the more structured I can go forward with my speech and my conversation.
I answer to the situation.