Welcome to the "Being human Club"

- it's been recorded that we have an average of 60,000 thoughts a day and 60% of them considered negative. One thing we don't need to do is get negative about our minds wandering. It pays to notice when your mind is wandering if you are missing out on important information being presented to bring it back to the present. Just say an affirmation like I am focused on the task at hand to remind yourself that you want to focus on that.
On other occasions your mind might be wandering into some great ideas... be a shame to block that, so just notice the thoughts everyone does it. You can change them if you want consider it being creative. There are even ideas in fantasy thoughts. No it doesn't block information from the inner mind it may even open the floodgates to information from the inner mind... keep asking it questions. For some people verbal thoughts are the equivalent of image streaming.
Alex