I served in the military years ago. Just one tour. I got out with good memories but also some ideas. For example, I have standardized on Levi's 501 jeans, button down shirts of the same brand, and desert boots. I wear this daily. I don't have to think about what I wear. All my clothes fit as I expect, all the time. This frees me up to think about what matters--my family and job.
I made a comment further down about freewill you might find interesting, as freewill is now going to cost those of us who care about it.