This was a mistake: I once told a female friend to go ahead and meet me in Tokyo when I went some time ago. She was excited. Then I wrote in a blog that she shouldn’t be too excited because I need my space, that I, huh-hum, walk the Earth alone. This did not go over well. This was unmannerly. And dumb. Whatever. It was true.

Decidedly, defiantly, I am an incorrigible solo traveler. Occasionally I’ve traveled to Europe or somewhere in the States with a gal pal, but 99-percent of the time I’m a one-man production. Two weeks in Japan. Three weeks in India. Two weeks in Turkey. Ten days in Paris. Do I get lonely? Rarely. Embracing solitude and deflecting loneliness is an art form, and, done right, it’s invigorating.

Last fall, I wrote here about loneliness vs. solitude: “My own skin doesn’t fit well. Which means comfort among others doesn’t come easy. Traveling, I love to read in cafes, scribble in journals in bars, roam streets, cathedrals and cemeteries alone, without the nattering of companions. I move to my own beat …”

So I am gladdened by the new book “Alone Time: Four Seasons, Four Cities, and the Pleasures of Solitude” by journalist Stephanie Rosenbloom. Not only are the four cities she explores — Paris, Istanbul, Florence, New York — some of my absolute favorites, but her experiment in solitary travel is of course immensely attractive.

Despite spending undue verbiage defending solitude — feebly citing scientists, psychologists and philosophers who rail against the social stigma of aloneness, as if it’s some zany pathology — Rosenbloom says that solo travel is surging, and, a fine reporter, she provides the stats.

In a time when everything is socially entwined and extravagantly networked, the hunger for alone time is greater than ever, be it a solo trip to a movie or a solo trip to Morocco. I habitually go the movies alone, just as I unfailingly globe-trot untethered. As Rosenbloom learns, such excursions are steeped in rare splendors, from the placidity of eating alone and truly savoring a meal to the transformative power of focusing on the present moment.

“Alone, there’s no need for an itinerary,” she writes. “Walk, and the day arranges itself.” One can be “curious, improvisational, open to serendipity.”

As when I spontaneously tooled through the fairy-tale hills of Cappadocia, Turkey, on a rented Vespa, or stumbled upon the ritual slaughter of sacred rams in a mosque abattoir in Istanbul, or visited an orphanage for critically ill children in Siem Reap, Cambodia, or, most harrowing, got myself detained by Hezbollah goons in South Beirut. And of course there are countless cordial encounters and forged friendships among fellow travelers and locals that organically blossom, and often last.

Rosenbloom had a plan: visit Paris in springtime, Istanbul in summer, Florence in autumn and New York, her hometown, in winter. Except for New York, she was only in each city for up to one week. Her aim was to peel back the delights of traveling alone in exemplary locations, ones awash in food, architecture and art, revealing how fine it can be to be unhurried, “accountable to no one,” exhilaratingly free.

The upshot is part vivid travelogue and vague memoir, filigreed reportage and free-floating opinion. “Alone Time” doesn’t provide the stunning personal epiphanies and life-altering experiences of Elizabeth Gilbert’s classic “Eat, Pray, Love” (nor the luxurious prose). It’s more a practical guide, a how-to on solo travel, including an epilogue, “Tips and Tools for Going It Alone.” (Though I had to roll my eyes at a few sections, like this one: “How to Be Alone in a Museum” — really?) She offers some gauzy instructions, like how “to be open to wonder,” which, actually, is much easier than you think.

Rosenbloom, diehard journalist, is wed to her sources, so that her rigorous apologia for eating alone comes with too many testimonials from psychologists and the like, bogging down what modest narrative thrust there is. I wanted to blurt out: “Eating alone: Just do it! It’s entirely fine and easy and acceptable. You don’t need a sheaf of Ph.D studies to validate this primal pleasure.”

For this introvert, whose two favorite cities happen to be Paris and Istanbul, “Alone Time” is a mild affirmation that my travel habits might have universal appeal, something I kind of already believed. Solitude -— not loneliness, which must be fended off —  is a source of power and creativity, great assets while on the road.

As I wrote last fall: “In solitude one reaps energy from oneself. You create your own space on your own terms, with your own powers, cultivating your mind, with the option of joining the wide world at anytime. Great freedom defines solitude. It’s the incubator of creativity and art. It’s the locus of self-communion.”

Rosenbloom, who began her physical journey and spiritual awakening in the City of Lights, sums up with characteristic pragmatism and admirable ambition: “My aim wasn’t to master Paris. It was to master myself: to learn how a little alone time can change your life — in any city.” And there she nails it.