We’ve all been there: it’s 90 degrees outside, absolutely sweltering, and you’re walking home from a new smoothie shop less than a mile away from your apartment, and everything is melting. The smoothie in your right hand. The açaí bowl in your left. Your old, broken headphones slowly slip off your head as a song you’ve never heard before blares through the speakers. Your willpower is diminishing by the second, and no one is around to help you.

Okay, that might be a bit specific (and precisely what happened to me about an hour ago). Still, you’ve likely had a similar experience: an encounter that left you annoyed, frustrated, or feeling hopeless.

But what if I told you that, according to Mo Gawdat, a former Google executive who has spent the last 20 years researching the mechanics of happiness, you only need to endure that emotional roller coaster for precisely 90 seconds?

Meet the man behind the 90-second rule

It’s time to meet the man who is revolutionizing our understanding of our emotions by giving us all a science-backed way to hit the reset button on our worst days.

Mo Gawat isn’t your typical wellness guru peddling crystals and manifestation journals. This is a guy who spent years as Chief Business Officer at Google X, the company’s “Moonshot Factory,” where he pursued ambitious, high-risk but potentially world-changing projects that tackled large-scale global problems like climate change, healthcare, and communications. But his most profound discovery about human happiness stemmed from his darkest hour.

When Gawdat’s 21-year-old son Ali died from preventable medical negligence during what should have been a routine surgery in 2014, he faced a darkness that would define the rest of his career. A clear choice emerged. He could either let this grief consume him, or honor his son by dedicating his analytical mind to a path Ali had always encouraged him to pursue: spreading happiness to as many people as possible.

Seventeen days after losing his son, Gawdat sat down and began writing Solve for Happy: Engineer Your Path to Joy. Through this book, he uncovered a revolutionary truth: our emotions aren’t permanent. They have expiration dates.

The fascinating brain science behind your emotional meltdowns

Here’s where things get fascinating. When developing what would later be known as the “90-second rule,” Gawdat stumbled upon the findings of Harvard-trained neuroscientist Dr. Jill Bolte Taylor. Similarly, her research was also formed in the pressure cooker of an unexpected, dramatic life experience: the moment when she underwent a massive stroke.

As Dr. Taylor’s left brain hemisphere shut down, she gained unprecedented real-time insight into how emotions function in the body.

What she discovered is that when something triggers you, be it a spilled smoothie or a coworker’s passive-aggressive “per my last email” message, your amygdala (think of it as your brain’s overly cautious security guard) floods your system with stress hormones like cortisol and adrenaline. Your heart starts to race as if you’ve just spotted a bear and begun to run, your muscles tense up, and that instinctual fight-or-flight response surges through your body.

The brain’s amygdala. Photo credit: Canva

However, this chemical cascade has a built-in timer. As Dr. Taylor discovered, it takes approximately 90 seconds for these stress hormones to be flushed from your bloodstream. Meaning that, after that initial surge, the physical component of your emotional reaction is over.

But why doesn’t it feel like that? Why do we marinate in our emotions (anger, sadness, confusion, delusion) for hours, days, or more? That’s because, after those 90 seconds, we make a choice, usually without realizing it, to keep those emotions going by mentally rewinding and replaying the triggering event.

Why do we keep choosing emotional suffering?

“What happens is, you run the thought in your head again, and you renew your 90 seconds,” Gawdat explains. It’s like poking a bruise that’s formed on your knee, or hitting refresh on your personal stress response button. Every time you mentally revisit a stressful event, analyzing what you should have said, reimagining confrontations, and crafting the perfect comeback, you’re essentially retriggering that same potent chemical reaction that occurred in the first place.

So, while that 90-second episode of emotions ends quickly, we end up ruminating about what happened: over and over and over and over again.

This is more than a mere annoyance. Ift’s rewiring our brains in a bad way. Research shows that rumination doesn’t just prolong our bad moods, it intensifies them and can lead to anxiety and depression. We’re thinking ourselves into extended mental states simply by focusing too much on the past.

The three questions that reality-check your brain

What happens when you’ve successfully coasted through those initial 90 seconds but still feel like the world is out to get you? Gawdat developed a handy three-question reality check that serves as an emotional fact-checker for your brain:

Question 1: Is it true?

Gawdat claims that “90% of the things that make us unhappy are not even true.” Think about it: your partner seems distracted during dinner, and suddenly your brain spins an entire narrative about how they’ve fallen out of love with you. But how much of that is real? And what percentage of your little daydream can be chalked up to your brain being its usual dramatic self?

At best, our brains are excellent storytellers. The problem is that they’re prone to writing fiction and presenting it as truth.

So, the next time you find yourself spinning up a stressful “what if?” situation in your head, take a beat, and ask yourself a different question: “Is it true?”

Question 2: Can I take action?

If the answer to question one is “Yes, it is true,” then move on to Gawdat’s second question. Are there steps you can take?

If you have a real problem on your hands, then perfect! Channel that energy into solving it rather than drowning in it.

Question 3: Can I accept it and still create a better life despite it?

Here’s where things get tricky. If you can’t do anything about the situation, the final question before you becomes about “committed acceptance.” No, not passive resignation, but actively choosing to move forward and build something better despite the circumstances.

This can be difficult (remember, this process began with Gawdat searching for a way to make sense of his son’s death) but these questions aren’t about forcing toxic positivity or pretending like problems don’t exist. They help your brain make sense of what’s happened, distinguishing between productive and unproductive emotional energy.

Your brain: the overprotective parent

To understand how this works, it helps to think of your brain as an overprotective, hovering parent who sees danger everywhere. “Your brain isn’t your source of truth,” Gawdat explains. “It’s just a survival machine. A search party. It throws thoughts at you, hoping something will protect you. But that doesn’t mean any of them are true.”

Your mammalian brain evolved to keep you alive, not happy. When modern life presents you with stressful situations like traffic jams, work pressures, and particularly hot and evil temperatures, your ancient survival systems register these “threats” with the same emotional urgency as a saber-toothed tiger attack.

Putting the 90-second rule into practice

So, what does this really look like in real life knowing the science is only half the battle?

Step 1: Notice the surge

When you feel that familiar rush of anger, frustration, or anxiety, create a mental note. “Okay, this is a chemically induced wave of emotion,” you might say to yourself without judgment.

Step 2: Set a timer, literally

For the first 90 seconds, your job is to observe. Feel every emotion to its fullest: your heart racing, your muscles tensing, your breath shortening. Acknowledge these physical sensations without trying to fix or stop them.

Step 3: Breathe and wait

Deep breathing can help calm your nervous system after an onslaught of chemical reactions and prevent your brain from fueling the emotional fire mentally.

Step 4: Choose your response

When those 90 seconds pass, you have what Gawdat calls a “buffer,” a moment of clarity when you can decide what to do next.

Step 5: Apply the three questions

If you’re still upset after the initial wave, run through Gawdat’s reality-check framework.

The 90-second rule offers a unique perspective on relating to your vitally essential emotions. Emotions provide information about the environment and motivate us to take action. The 90-second rule helps us experience our emotions fully without letting them hijack our entire day or our entire life.

The happiness equation connection

This framework connects to Gawdat’s broader “happiness equation,” which posits that happiness equals life events minus expectations. Much of our suffering comes not from what happens to us, but from the gap between the triggering event and what we think should happen.

As Gawdat puts it, “Life doesn’t give a damn about you. It’s your choice how you react to every one of [life’s challenges].” Which may sound harsh, but when put into practice, can prove quite liberating.

The next time you feel yourself crashing out, remember: you have 90 seconds to feel as irrational as humanly possible. After that? You get to decide how to spend the rest of your day.

This article originally appeared one year ago. It has been updated.

A single door can open up a world of endless possibilities. For homeowners, the front door of their house is a  gateway to financial stability, job security, and better health. Yet for many, that door remains closed. Due to the rising costs of housing, 1 in 3 people around the world wake up without the security of safe, affordable housing. 

Since 1976, Habitat for Humanity has made it their mission to unlock and open the door to opportunity for families everywhere, and their efforts have paid off in a big way. Through their work over the past 50 years, more than 65 million people have gained access to new or improved housing, and the movement continues to gain momentum. Since 2011 alone, Habitat for Humanity has expanded access to affordable housing by a hundredfold. 

A world where everyone has access to a decent home is becoming a reality, but there’s still much to do. As they celebrate 50 years of building, Habitat for Humanity is inviting people of all backgrounds and talents to be part of what comes next through Let’s Open the Door, a global campaign that builds on this momentum and encourages people everywhere to help expand access to safe, affordable housing for those who need it most. Here’s how the foundation to a better world starts with housing, and how everyone can pitch in to make it happen. 

Globally, almost 3 billion people, including 1 in 6 U.S. families, struggle with high costs and other challenges related to housing. A crisis in itself, this also creates larger problems that affect families and communities in unexpected ways. People who lack affordable, stable housing are also more likely to experience financial hardship in other areas of their lives, since a larger share of their income often goes toward rent, utilities, and frequent moves. They are also more likely to experience health problems due to chronic stress or environmental factors, such as mold. Housing insecurity also goes hand-in-hand with unstable employment, since people may need to move further from their jobs or switch jobs altogether to offset the cost of housing. 

Affordable homeownership creates a stable foundation for families to thrive, reducing stress and increasing the likelihood for good health and stable employment. Habitat for Humanity builds and repairs homes with individual families, but it also strengthens entire communities as well. The MicroBuild® Initiative, for example, strengthens communities by increasing access to  loans for low-income families seeking to build or repair their homes. Habitat ReStore locations provide affordable appliances and building materials to local communities, in addition to creating job and volunteer opportunities that support neighborhood growth. 

Everyone can play a part in the fight for housing equity and the pursuit of a better world. Over the past 50 years, Habitat for Humanity has become a leader in global housing thanks to an engaged network of volunteers—but you don’t need to be skilled with a hammer to make a meaningful impact. Building an equitable future means calling on a wide range of people and talents.Here’s how you can get involved in the global housing movement:

Speaking up on social media about the growing housing crisis 

Volunteering on a Habitat for Humanity build in your local community

Travel and build with Habitat in the U.S. or  in one of 60   countries where we work around the globe

Join the Let’s Open the Door movement and, when you donate, you can create your own personalized door 

Shop or donate at your local Habitat ReStore

Every action, big and small, drives a global movement toward a better future. A safe home unlocks opportunity for families and communities alike, but it’s volunteers and other supporters, working together with a shared vision, who can open the door for everyone. 

Visit habitat.org/open-door to learn more and get involved today. 

You finally have good news. A promotion at work. The text you’ve been waiting all week for. You watch your kid take those first wobbly steps across the living room.

You excitedly tell a friend, your heart still racing a little, and they glance at their phone, mumble, “That’s great,” and slump back into their chair. Technically, they said the right thing. But their body told a different story.

Nonverbal cues are like the backstage crew of every conversation. Just because you don’t always notice them doesn’t mean they’re not there, controlling the lights, the mood, and the entire show. Psychologist Albert Mehrabian suggested that when we express feelings, only a small portion of the message comes from words, while much of the rest comes from tone and body language.

In other words, you can say “I’m listening” with your mouth, but your posture, eye contact, and tone of voice might be saying “I’m not.”

But there’s hope! These are skills, not personality flaws, and once you see the patterns—a handful of automatic, low-awareness habits that can unintentionally make others feel judged, dismissed, or unimportant—you can start to shift them.

Here are nine common “silent habits” that can create distance, plus gentle ways to adjust your behavior:

1. Avoiding eye contact

You’re halfway through a story about how your previous apartment was infiltrated by bees, and you can........

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