We don't think much anymore. I'm talking about really thinking. Our modern tech world keeps up wired constantly to some sort of high tech device. We can't do anything without them. This has created a thinking deficiency. If the brain doesn't think, the brain will shrink. Once the human brain starts shrinking---- I don't want to think about what will happen to society!
So at least for 15 to 30 minutes a day or a week turn off all your tech stuff, including the TV, go outside, look at the scenery, and think. Think about anything that comes to mind.