It’s Game 7 of the World Series. Your favorite team is down by one run in the bottom of the ninth inning. The bases are loaded. Two outs. The tension is unbearable.
As your team’s best hitter steps to the plate, you realize you’re sitting in the exact same spot on the couch where you were sitting when they scored the winning run in the previous game. You immediately freeze. You don’t dare move. The batter works the count full. You tighten your grip on the armrest.
“Don’t move,” you tell your spouse.
“What?”
“Don’t move! We scored last time when we were sitting exactly like this.”
Your spouse laughs.
“You don’t really think that’s why they scored, do you?”
“Of course not.”
But you stay perfectly still anyway. The pitcher winds up.
Crack!
The ball rockets into the gap. The winning run scores. Your team wins. You jump off the couch in celebration. Then a strange thought crosses your mind: Maybe sitting perfectly sill in that spot helped.
Deep down, you know it didn’t. But what if it did? The next game you sit in the same spot again. Just in case. After all, why take the chance? Most people have experienced superstitions. Athletes wear lucky socks. Students bring a lucky pencil to an exam. Most people recognize these rituals as harmless traditions.
But OCD often begins when the brain starts treating a possibility as if it were a responsibility. The thought isn’t merely:
“What if something bad happens?”
The thought becomes:
“What if something bad happens and it’s my fault?”
That distinction is important. People with OCD tend to feel unusually responsible for preventing bad outcomes. They often overestimate danger and underestimate their ability to tolerate uncertainty. As a result, they feel compelled to do something: Check. Wash. Avoid. Research. Confess. Pray. Seek reassurance. Mentally review.
For a moment, the anxiety decreases. Relief. And that’s where OCD takes hold.
The OCD Trap
Imagine you’re leaving for work. You lock the front door. As you walk to your car, a thought pops into your mind:
“Did I actually lock it?”
You think you did. But what if you didn’t? You return and check. Locked. Relief. You start walking away again and then another thought appears.
“Are you sure you locked it? There have been robbers in the neighborhood. Check one more time. It’s better to be safe than sorry.”
Back you go. Locked. Relief. As you begin to drive off you get a feeling that you didn’t lock it. “I don’t want to be the idiot who leaves their door unlocked and gets robbed.” So you drive home and check again. This time you spend a couple of minutes making sure you locked the door.
The more important the issue feels, the harder it becomes to tolerate uncertainty. After all, what if someone breaks in? What if your family isn’t safe? What if you’re responsible? The checking begins to feel necessary. You feel compelled to check, not because you know the door is unlocked but because you’re not 100% certain.
Why Compulsions Make OCD Worse
The problem isn’t the intrusive thought. Everyone has strange, disturbing, or irrational thoughts. Research shows that people with and without OCD experience many of the same intrusive thoughts. The difference is what happens next. Most people dismiss the thought. A person with OCD treats it as important. The thought triggers anxiety. The compulsion reduces the anxiety. The brain connects the dots. It concludes:
“Checking kept me safe.”
“Washing prevented disaster.”
But those conclusions are often false. The anxiety decreased because the compulsion provided temporary relief. The brain mistakenly credits the ritual for preventing danger. As a result, the urge to perform the compulsion grows stronger.
How OCD Expands
Imagine someone develops a fear of contamination. At first, they wash their hands after using a public restroom. Reasonable enough. Then they start washing after touching door handles. Then shopping carts. Then restaurant menus. Then packages delivered to their home. Eventually they begin avoiding certain places altogether.
The list of feared contaminants grows. The rituals become longer. The rules become stricter. Life becomes smaller as more and more time is occupied by thinking about disastrous outcomes and performing rituals.
What begins as one fear gradually spreads into many others. This process is called generalization. The same thing happens with checking, relationship OCD, health anxiety, scrupulosity, harm OCD, sexual orientation OCD, and countless other OCD themes. The content changes. The process stays the same.
The Need for Certainty
At its core, OCD is often a struggle with uncertainty. Most people can tolerate some doubt. A person with OCD feels compelled to eliminate it. Unfortunately, certainty is impossible especially when the obsessions are relentless, convincing, and feel so real. No amount of compulsive behaviors can prove with absolute certainty that the door is locked, the germs are gone, you don’t have cancer, you didn’t hit the pedestrian with your car, you won’t stab your child with a knife, you aren’t gay, and you don’t pray perfectly enough to prevent a disaster.
OCD is not only demanding but very time consuming, disruptive, and frustrating for family members. The more certainty a person seeks, the less certain they feel. “I was so focused on not hitting the pedestrian I might have hit the girl on the bike. I might have killed her. What if I’m arrested. My life will be ruined. I need to check the news to see if anyone on a bike was killed.”
Why Some People Develop OCD
Like anxiety disorders, OCD tends to develop through a combination of biology and learning. Research consistently shows that OCD runs in families. Genetics appear to play a significant role, suggesting that some people are born with brains that are more sensitive to doubt, uncertainty, responsibility, and perceived threats. Stressful life events can also contribute to the onset of OCD. Major transitions, illness, trauma, pregnancy, parenthood, and periods of significant stress can all increase vulnerability.
For some people, OCD begins in childhood. For others, it emerges during adolescence or adulthood. There is rarely a single cause. Rather, OCD develops when a genetically vulnerable brain becomes trapped in a cycle of intrusive thoughts, anxiety, compulsions, and temporary relief.
How OCD Takes Over
OCD rarely arrives all at once. It grows gradually. One intrusive thought. One compulsion. One moment of relief. Then another. And another. What begins as a small attempt to feel safe slowly becomes a system of rules, rituals, and avoidance that consumes more and more time and energy. Eventually, the person finds themselves asking: “How did I get this way?”
The answer is usually not weakness, lack of willpower, or irrationality. It’s a learning process. A very human learning process. The brain learns that compulsions reduce anxiety. And because the brain loves relief, it keeps asking for more. Until one day, the compulsions that once felt helpful begin running the show.
