It was almost 1 a.m. by the time I came out of Walmart one night. I didn’t have many items, but I rolled my purchases out to the car on a shopping cart because I had a huge bag of dog food that I didn’t want to carry. It had been raining hard while I was in the store, but there was a break in the rain while I walked out and loaded the car. Then the rain started again.
The parking lot was virtually deserted and there were shopping carts left abandoned in various places, presumably by people who didn’t want to take the time in the rain to put the carts in the places where they belonged. But I found myself walking the empty cart over to the cart corral — or whatever they call it these days — as the rain came pounding down on me.
As I ran back to the car, I laughed at myself for going to the trouble of putting the cart in the right place in the downpour. I briefly wondered why I bothered. After all, there were plenty of other carts all over the parking lot. Mine would have been just one more. There was nobody out there to see me, so nobody would have even known I hadn’t put it where it was supposed to go. Despite those things, I immediately knew why I’d done it.
I’d returned the cart to the proper place simply because I had decided — at some distant time in the past that I don’t even recall — that I was the kind of person who always put the cart up. I’d seen — and disapproved of — many people over the years who left carts in random places in parking lots. So I’d unconsciously programmed myself. I had decided that I wasn’t like that — and that programming gently led me to walk with a cart in the rain when others wouldn’t.

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