New research on the brains activity

When an infant is born there are no thoughts to guide the child. The child depends on the five senses, eyes and hears to direct to what gets their attention. Then somehow along the way the mind starts to come to life.
Now, new research is out showing the brain activity during the first few years is higher then it will be during any other time in life. So, after the age of six what is causing the brain activity to drop and never reach the level it was at in the first six years? Its the mind.
In the beginning the brain used the five senses to understand things, to explore life. Then, the mind slowly took over, the five senses are not as important anymore.
When a child, teen or adult lives each day from habits. These habits will let the mind create impulses. I took a 40 years old man living with OCD, Bi-polar, Paranoia-schizophrenia and severe depression, within 4 months his employer thought he was back on his medication. He stopped getting impulses by being active doing new things everyday.
A three year old child can develop a habit. An adult will create many more habits, habits leaves your mind to bring up things which do nothing for you. Don't wake up to doing the same things as you did the day before.
The drop in brain activity has to do with habits. How many things in a day can you do without having to first think about what you are about to do. By finding new things to do without direction will engage the activity of the brain.