What you think most about takes up space in your brain. If you’re a musician, you’ll have a larger area of your brain dedicated to your hands. If you stop practicing, your brain will reorganize to devote more space to something else.
These brain changes start to occur almost immediately when you take up something new. They also disappear just as quickly if you stop. What’s interesting is that practice can be real or imagined. So if you’re a musician out of practice, even thinking about playing the guitar can lead to a measurable, physical change in your brain.
Your brain works the same way when it comes to your inner voice, and how you think about yourself. The little voice in your head can have an impact on the anatomy of your brain. It has the power to affect not only your thought patterns but your behaviors, too.