I've thought about that a lot this week. Culturally, what do we spend our time thinking about? Is it material things, video games, how to meet deadlines, what we look like? Is it shaping the type of people we've become--overweight, stressed-out, materialists?
The Apostle Paul's admonitions to "set your minds on things above, not on earthly things" and "be transformed by the renewing of your mind" implies that the work we do within our minds matters. It has impact. It also implies it is something we have control over.
What if the first step is simply thinking about how we think? Then, changing the focus of what we think about.
If you are able to choose what you think about, then make sure it is good stuff. The type of stuff you want to become.