A famous song of the Great Depression was “Brother, Can You Spare a Dime?” Today we might change that title to “Mother, Can You Spare Some Time?” If you’re in the peak years of your life, odds are you’re sprinting through most of your days. You’re running flat-out as fast you can, like so many others around you, and you’re getting lots accomplished, which is all to the good. But sometimes you may feel that some ingredient for happiness is missing. You aren’t sure what it is, but you sense some key component of the good life is eluding you, lost in the day’s hectic schedule. Let’s say you’re an ambitious 30-something accountant in a large firm. Your spouse teaches part-time English composition in a community college, you’re blessed with a preschooler and a first-grader, and you spend weekends and evenings tending to their needs, making repairs to your home, …