There are certain ages that are serious birthday milestones, and you鈥檒l never forget them for as long as you live. There鈥檚 sweet 16 (hello, driver鈥檚 license!), and let鈥檚 not forget 21 鈥 do we even have to say why? And of course, the big 3-0, an age many feel like they finally come into their own. All of these ages warrant a blowout birthday party, but if you thought any of them were your happiest years, think again! Apparently, even though most of us believe we鈥檙e in our prime in our 20s and 30s, according to science, your happiest age actually comes much, much later in life than you would ever imagine.

According to a British government survey, the ages of 65 and 79 are on average a person鈥檚 happiest years. Say what? The survey examined data from 300,000 adults over a three-year period 鈥 between 2012 and 2015 鈥 and found those surveyed reported the highest levels of personal well-being in their later years. Forget your 20s 鈥 it鈥檚 all about your swinging 60s (and 70s, apparently)!

So it鈥檚 all downhill from here then? Not so much. The survey found that people in their 40s and 50s scored the lowest when it came to wellness and life satisfaction. It found that people in their 90s were happier than those who were middle-aged. The reason why middle-aged folks are at peak anxiety is often due to still working hard while simultaneously balancing family issues that were nonexistent in their 20s and 30s. Ah, that explains the mid-life crisis. However, before you start counting down the days until you turn 65, keep in mind this is just one survey, and others have shown that people in their 40s are actually their happiest. But whether you鈥檙e 40, 50 or 90, there鈥檚 still a lot to look forward to. So 20- and 30-year-olds, don鈥檛 fret. Your best years are still ahead.

At what age do you think you鈥檒l be happiest? Tweet us @BritandCo!

(Photos via Getty)