The Viral October Theory Is Back—Does Fall Really Make Us Want to Change Our Lives?

Somewhere between the first pumpkin candle and the sudden, uncontrollable urge to reorganize your entire pantry, you might notice it: a very specific, mildly frenzied energy that has nothing to do with the bucket of Halloween candy sitting idly in your entryway—and everything to do with wanting to reinvent your whole life by 11:59 p.m. on December 31.

If you’ve felt it, you’re not imagining things, and you’re definitely not alone. Naturally, the internet has a name for it: “October theory”—the idea that October functions as a sort of second New Year. The concept first gained traction on TikTok in 2023, with creators describing October as a chance to reframe the rest of the year rather than waiting for January 1. It resurfaces every fall, right on schedule, and this year is no exception.

So is there anything real behind it, or is this just seasonal main-character energy? Here’s a closer look at where the idea actually comes from, the psychology that makes it stick, and—more usefully—what to actually do with that energy once you’ve felt it.

What Is October Theory, Exactly?

London-based content creator Izzy Utterson was among the first to name the trend, explaining that the arrival of spooky season marks a 90-day lead-up to the New Year—a natural catalyst for self-reflection and personal growth. In a video that’s since racked up nearly 42,000 views, she urged followers to treat the transitional period as an opportunity and set themselves a 90-day challenge. “The October Theory to me is this idea that October is a transformative period in our life,” she told Newsweek. “It’s three months until the New Year, so we start to really reflect on what’s behind us and look to the year ahead.”

The trend didn’t fully take off until late September and early October of 2024, when creators across TikTok began describing the same feeling: a sudden urge to take stock of the year and make changes before it ends. The framing positions October 1 as an alternative January 1. Rather than saving resolutions for the New Year, the idea is that October is a better, more natural time, actually, to focus on self-growth and new beginnings.

A large part of the appeal is simply arithmetic. The arrival of fall marks roughly a 90-day lead-up to the New Year, which Utterson, among other creators, have described as a natural catalyst for self-reflection and a kind of built-in challenge window. As Macy Landsman, a TikTok creator based in Miami, said, October tends to stir up the same anxious, motivated feeling people usually associate with the arrival of a new year—a moment to reflect on what’s been accomplished and what still needs work.

There’s a practical logic underneath the trend, too. According to Brianna Paruolo, LCMHC, a psychotherapist and founder of On Par Therapy, it makes sense why this time of year feels so inspiring. “Research suggests that it takes an average of 66 days for a new behavior to become automatic, though this can vary depending on the complexity of the habit and individual differences,” Paruolo explained. “By beginning in October, you’re giving yourself roughly 90 days until the New Year—ample time to not only form a habit, but to start seeing meaningful progress.”

Why This Feeling Is So Specific to Fall

Part of what makes October theory land, even for people who otherwise generally roll their eyes at TikTok trends, is that it’s tapping into something psychologists actually have a name for: the “fresh start effect”—the well-documented tendency to feel more motivated to pursue goals right after a symbolic turning point, or “temporal landmark.” New Year’s Day is the most obvious one, but the first of a new month, a birthday, or the shift into fall can trigger the same psychological reset button.

Part of the trend’s appeal also comes down to timing itself. According to the experts at Calm, after the unstructured swirl of summer and the first chaotic weeks of fall, October tends to feel steadier, as routines, work, and school schedules settle back into place. It makes sense that a return to structure would also come with a return to wanting structure elsewhere in life.

The Part of October Theory Worth Being Skeptical Of

Here’s the catch: The same 90-day urgency that makes October theory motivating can also tip into pressure fast. Plenty of the trend’s messaging leans into big swings—switching jobs, ending a situationship, or taking a leap of faith on a new project, treating October as the month for big changes and major life decisions before the year runs out. That’s a lot to ask of any 90-day window, and it’s this exact all-or-nothing thinking that tends to produce a burst of motivation in week one and total burnout by week three.

If October theory is really just a rebranded version of the New Year’s resolution cycle—big goals, high stakes, passive abandonment by February—it’s not actually offering anything new. In other words, the useful version of this trend isn’t “become someone else before December.” It’s noticing that you have a pocket of real motivation available right now, and using it on something realistically sized.

So What Should You Actually Do With This Energy?

Rather than attempting a complete overhaul, the more sustainable version of this trend focuses on small, meaningful additions instead of dramatically cutting things out all at once. A few ways to put that into practice:

That’s really the whole trick to using October theory without burning out on it—because the version of your life you’re picturing while scrolling TikTok at 11 p.m. isn’t the one you actually have to live with tomorrow morning.

If you want a fuller framework for this rather than picking something in isolation, we’ve written a whole guide to building a fall routine that actually sticks. It’s worth a read if October theory has you feeling motivated but not sure where to actually start.