1 . Nostalgia (怀旧) has become increasingly common in the current accelerated, unexpected changes. More and more Americans are turning back with longing to what feels like simpler, sweeter times. They collect cassette tapes, manual typewriters, even decades-old video games.

Is it a mistake to miss the past? Some psychologists warn that too much devotion to the so-called good old days is an escape from reality; it suggests loneliness or that a person is having a difficult time coping in the present. Psychologist Stephanie Coontz argues that nostalgia distracts us from addressing the problems of modern life and contributes to anxiety, depression, sleeplessness, etc.

But new studies suggest that a modest amount of nostalgia is not only harmless, but actually beneficial. They suggest it helps strengthen our sense of identity and makes us feel more optimistic and inspired. It is also a tool for self-discovery and memories are a psychological response when you want to take a break from negativity. Recalling our childhood reminds us of “the times when we were accepted and loved unconditionally,” says Krystine Batcho, a psychologist. “That is such a powerful comfort, knowing that there was a time in life when we didn’t have to earn our love.” Nostalgia can turn even the most ordinary past into legends which warms the heart and the body. Let’s not forget that nostalgia has been a source of inspiration to countless American writers. Mark Twain recalled his boyhood, writing, “After all these years, I can picture that old time to myself now, just as it was then.”

So go ahead, daydream a little about your best childhood friend, a long-gone family pet, etc. As Dr. Sedikides says, “Nostalgia is absolutely central to human experience.” But at the same time, keep these words of wisdom from the great inventor Charles Kettering in mind as well: “You can’t have a better tomorrow if you are thinking about yesterday all the time.”