"This is about realising that we're going to die one day and being more selective in who we spend time with [and] fully accepting that we'll never achieve many things," says Arthur Stone, professor of psychology, economics, and health policy and management at the University of Southern California. He adds that these realisations tend to leave people with smaller but more enriching social circles, a predilection toward happiness over hassle and a higher likelihood of general contentment.
Far from signalling the death of ambition, however, the calm we gain with age can make future achievement more possible, according to psychologist Ellen Langer. Our newfound equilibrium stems from experience and knowing that most things will turn out okay, says the Harvard University professor and author of "Mindfulness."
"I was recently playing tennis against two younger boys who lacked wisdom of the game," she says. "They hit better than me and were faster but, as an older person, I have a sense of where the ball is going to go so I don't have to race all over the place," says Langer, who is 72. "Wisdom changes the game."
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She adds that it's often perfectly acceptable for older workers to intentionally lower their productivity. "When I was younger, I felt each journal article I published would make a big difference. Now I realise it doesn't matter. If I write fewer now, it's not because I don't care; it's because my values have changed." Langer acknowledges that publishing was important earlier in her career, and she doesn't regret the time or effort she spent pursuing it.
Sonja Lyubomirsky, a psychology professor at the University of California at Riverside, and author of "The How of Happiness," doesn't believe our 50s bring a natural drop in ambition. "That's the peak of your career. I remember dreading turning 50, and a friend said to me, 'Sonja, 50 is when you own it! People are running the world in their 50s.' "
Um, other people, maybe, but point taken. Perhaps sensing my sudden drop in hedonic well-being, Lyubomirsky quickly adds, "But if you're slowing down at work and feel good about it, that's great. You're making the decisions that make you happy."
She echoes Langer's point about clarity and shedding anxieties that almost always do more harm than good. "My younger colleagues are so anxious all the time, and that gets in the way of their work and their happiness," Lyubomirsky says.
I ask her why people get better at shedding those anxieties as they age. For example, I say, I can go out and enjoy a 45-minute run at lunchtime even though I know I have a mountain of work waiting for me, something I couldn't achieve a decade ago.
It's partly physiological, Lyubomirsky says, citing the findings of a 2006 study published in the Journal of Neuroscience (titled "The Mellow Years?"), in which researchers conducted brain imaging on 242 healthy individuals. The scans showed that younger brains were more attuned to fear and less to happiness, and the reverse was true in older subjects. Basically, as we age, we suppress reactions to negative stimulation - particularly threats - while letting positive responses flow without restraint. As Lyubomirsky puts it: "Positive emotions can neutralise negative ones. It's hard to be bitter and angry at the same time you're happy."
Langer offers another example of how the happiness continuum can liberate us, one she hopes will help show younger folks that their elders aren't necessarily losing it, and in fact are much further along in getting it. "When you're a young woman wearing pantyhose and they rip, you immediately worry about being negatively evaluated. As you get older, you realise that the people who care about you aren't going to stop caring because of your pantyhose, and that anyone who is going to judge you doesn't matter."
It's not a situation I'm familiar with, but I understand what she's getting at. And after talking with Langer, Stone and Lyubomirsky, I've concluded that my recent ascent toward Zen doesn't mean my career's over. In fact, I think it means something better. In my 50s and beyond, I can be happier in my work - and in everything else.