As we go through life, we’re often reminded that time is a precious commodity. It’s something we can never get back, and once it’s gone, it’s gone forever. For many of us, the realization that we’re only here for a limited time can be daunting, especially as we get older.

Today I turn 61. As a sexagenarian, I’ve reached a milestone that many people consider to be the start of their golden years. But for me, it’s a reminder that I’ve already lived at least two-thirds of my life. That means I probably have around 1,042 weeks left, at most, to live my life to the fullest. It might sound like a lot, but when you consider how fast time seems to fly by, it’s not that much at all.

And let’s face it, my days of any real productiveness will probably cease by the time I’m 80. Of course, that’s not to say that life after 80 can’t be fulfilling and enjoyable in its own right. But for many of us, the thought of slowing...