Cultivate your garden

...the researchers’ thesis was that “when individuals are unable to gain a sense of control objectively, they will try to gain it perceptually.” As Whitson explained the psychology to me, “Feelings of control are essential for our well-being—we think clearer and make better decisions when we feel we are in control. Lacking control is highly aversive, so we instinctively seek out patterns to regain control—even if those patterns are illusory.”

...In 1976 Harvard psychologist Ellen J. Langer and Judith Rodin, now president of the Rockefeller Foundation, conducted a study in a New England nursing home in which the residents were given plants, but only some had the opportunity to water them. Those residents who were in charge of watering the plants lived longer and healthier lives than the others, even those given plants watered by the staff. The sense of control had the apparent effect on physical health and well-being...

Whether it was a sense of control or the feeling of nurturing life - it strengthens the case to cultivate your garden and the garden of yourself.