As people approach midlife, the days of youthful exploration, when life felt like one big blind date, are fading. Schedules compress, priorities change and people often become pickier in what they want in their friends.

No matter how many friends you make, a sense of fatalism can creep in: the period for making B.F.F.’s, the way you did in your teens or early 20s, is pretty much over. It’s time to resign yourself to situational friends: K.O.F.’s (kind of friends) — for now.

But often, people realize how much they have neglected to restock their pool of friends only when they encounter a big life event, like a move, say, or a divorce.

In studies of peer groups, Laura L. Carstensen, a psychology professor who is the director of the Stanford Center on Longevity in California, observed that people tended to interact with fewer people as they moved toward midlife, but that they grew closer to the friends they already had.

Basically, she suggests, this is because people have an internal alarm clock that goes off at big life events, like turning 30. It reminds them that time horizons are shrinking, so it is a point to pull back on exploration and concentrate on the here and now. “You tend to focus on what is most emotionally important to you,” she said, “so you’re not interested in going to that cocktail party, you’re interested in spending time with your kids.”

The workplace can crackle with competition, so people learn to hide vulnerabilities and quirks from colleagues, Dr. Adams said. Work friendships often take on a transactional feel; it is difficult to say where networking ends and real friendship begins.

Differences in professional status and income also complicate matters.

Once people start coupling up, the challenges only increase. Making friends with other couples “is like matchmaking for two,” said Kara Baskin, a journalist who works in Boston.

Adding children to the mix muddles things further. Suddenly, you are surrounded by a new circle of parent friends — but the emotional ties can be tenuous at best […]

External factors are not the only hurdle. After 30, people often experience internal shifts in how they approach friendship. Self-discovery gives way to self-knowledge, so you become pickier about whom you surround yourself with, said Marla Paul, the author of the 2004 book “The Friendship Crisis: Finding, Making, and Keeping Friends When You’re Not a Kid Anymore.” “The bar is higher than when we were younger and were willing to meet almost anyone for a margarita,” she said.

Having been hardened by experience, many people develop a more fatalistic view of friendship.

By that point, you have been through your share of wearying or failed relationships. You have come to grips with the responsibilities of juggling work, family and existing friends, so you become more wary about making yourself emotionally available to new people. “You’re more keenly aware of the downside,” said Mr. Koppelman, 46. “You’re also more keenly aware of your own capacity to disappoint.”

“I haven’t really changed my standards for what it means to actually be friends,” he concluded. “It’s just that I use the word ‘friends’ more loosely. Making the real kind, the brother kind, is much harder now.”

Cognitive restructuring is a core part of Cognitive Behavioral Therapy (CBT). CBT is one of the most effective psychological treatments for common problems like depression, anxiety disorders, and binge eating. Here, clinical and social psychologist Alice Boyes shares some CBT techniques you can try at home to reduce problems with mood, anxiety, and stress.

• Practice Noticing When You’re Having a Cognitive Distortion […]

• Track the Accuracy of a Thought […]

• Behaviorally Testing Your Thought […]

• Evaluate the Evidence For/Against Your Thought […]

• Mindfulness Meditation […]

• Self-Compassion […]

Read the article for more details.

11 of the Most Beautiful Museum Libraries in the World

We’ve shown you many beautiful libraries from around the world, and we’ve shown you some of the most fantastic museums, as well — so what about gorgeous museum libraries? Well, because many museum libraries are strictly utilitarian, meant for easy browsing and not necessarily planned to be easy on the eyes. That said, some standouts manage to be both, and since we’re always on the lookout for lovely architecture, preferably lovely architecture that incorporates books, we thought we’d round a few of them up for you here. After the jump, check out 11 of the most beautiful museum libraries from around the world […]

Pictured above: The Library at the Shiba Ryotaro Memorial Museum, designed by Tadao Ando, Osaka, Japan.

Although not universally acknowledged as members of New York’s creative class, the people who sell cheese arguably deserve a place of recognition alongside the poets and the playwrights, the folk singers and the indie screenwriters.

In case you haven’t noticed, some of the most amusing and captivating writing in the city is being produced in the service of cheese.

A Sampling of the Signs

_ Bedford Cheese Shop _

Mastorazio, Madaio The Lindsay Lohan of the cheese world, this pecorino has a tan, leathery exterior that surrounds a delicate yellow paste. With hints of herbs and the aroma of hay, you can almost hear the bleating of Lindsay up in the Italian hills. Pair with nicotine, Red Bull and an alcohol monitor.

Andante Dairy Nocturne Icelandic ponies. Japanese cats on the Internet. Yawning puppies. Toddlers who give each other hugs. Goats climbing all over everything. Pink and green macaroons. Red pandas. Sparkly nail polish. Do you get where I’m going? Cute things. This cheese is so perfect and cute and delicious you just want to marry it. Or buy one and eat it.

_ Gastronomie 491 _

Seaver Brook Blue Sprawling, earthy and kind of overpowering, this Vermonter is the death metal band among the otherwise dulcet varieties of blue. Go for it, you only live once.

Taleggio Way more classic and rustic than a dog-eared copy of Gibbon, yet as potent and trenchant. This washed rind Italian is the basis for so many others, but few match the tangy flavor and pastoral aromas (hmmm, barnyard).

Galets de Cher Yes, it looks a tad, well, funkee, no? but this latest creation from our man Rodolph melts on your tongue, suggesting complex herbal ecstasy. It’s like getting the high of a Bikram Yoga class without the heat, the postures and the drill sergeant instructor.

A Man Feeding Swans in the Snow

Polish photographer Marcin Ryczek snapped this once-in-a-lifetime photograph of a man feeding swans and ducks from a snowy river bank in Krakow. The trifecta juxtaposition between black/white, water/snow, and person/animals is simply astounding. You can download a desktop sized version of the photo here, and check out more of Ryczek’s photos in his portfolio.

Reminds me a little of Escher’s work, e.g. Sky & Water :

Sky & Water

The study, he said, has potential ramifications for music education. “Attention can be modified,” he said. “It doesn’t have to be done chemically or by changing the environment. Human beings have the capacity to learn to self-regulate their attention, and when you do that it increases the quality of typical, everyday experiences. Listening to music mindfully can be a powerful way of increasing your quality of life. We really found significant increases in the participants’ aesthetic and flow experience. Some were intense. They were really in the zone.”

City life requires a lot of attention. Navigating a busy sidewalk while processing loud storefronts and avoiding rogue pigeons may feel like second-nature at times, but it’s actually quite a bit of work for the human brain. Psychologists do know that quick walks through the park can restore our focus, but they’re still getting a handle on just what urbanization means for human cognition.

A new series of behavioral studies offers some of the richest evidence to date on the mental exhaustion of urban living. In an upcoming issue of the Journal of Experimental Psychology: Human Perception and Performance, a group of British psychologists reports that people who live in cities show diminished powers of general attention compared to people from remote areas. With so much going on around them, urbanites don’t pay much attention to surroundings unless they’re highly engaging.

After a few more experiments the researchers formulated a theory about what’s happening here. They don’t think city life actually depletes one’s powers of attention. […] Instead, they suspect that city attention only becomes engaged when people cross paths with something especially worthy of notice. […]

So a quick summary, for those readers on the verge of losing focus: the brains of people in remote places seem ready to focus on the task at hand, while the brains of their urban counterparts seem prepared to explore the ever-changing conditions of city life. Certainly explains why some country folk find the city overwhelming, and some city folk find the country a little dull. Nothing personal — strictly neural.