In our depressing modern culture of instant gratification, it’s good to receive an unexpected reminder of the benefits of living a simple life. This reminder comes from the small town of Hinsdale, New Hampshire, from the unexpected person of the local trailer park caretaker. Before Geoffrey Holt died in June at the age of 82, he was just another old man on a lawnmower, taking care of the trailer park he called home without drawing too much attention to himself. What his fellow townsfolk didn’t know was that Holt was a shrewd investor who carefully managed his money, amassing a fortune of $3.8 …