It's true that minds wander. In other words, we can be easily distracted by the constant steam of thoughts that our brain pushes into consciousness. We've all been trying to work, but find ourselves distracted by thoughts of an argument with our spouse or kids, important things we have to do after work, etc.
As far as my paragraphs go, part of the brain sculpting, that has happened for both of us, is an understanding of the English language and structuring of written thought. Consider this.....if you truly control your thoughts, are you able to use your free will to not understand something that you do understand like the English language? Are you free to want something you don't want? Do you want to learn to play the violin or learn to speak Portuguese? If not, can you use your free will to want to learn both?