Decision Fatigue: Why Making Too Many Choices Leaves You Mentally Exhausted
Sometimes my husband jokes that we're basically that scene from The Notebook. You know the one.
“What do you want?”
“I don't know.”
He likes to say I'm indecisive. And that annoys me because I don't think I'm indecisive at all.
The truth is, sometimes I just don't want to decide. There are certain decisions I genuinely do not care about making, and if someone else is willing to make them, I will happily outsource the responsibility. My husband is usually that someone else. Although, if we're being fair, I think asking me what I want is occasionally his own attempt at outsourcing the decision. He would probably disagree with that assessment.
A perfect example is Fast Food Friday. Every Friday, we know we're getting takeout. Eventually, someone will ask the inevitable question:
“What are we getting for dinner?”
But part of the reason I love Fast Food Friday is because I don't want to answer that question. I don't want to plan the meal, check what ingredients we have, figure out what everyone will eat, cook it, or make one more decision about dinner. The kids can pick. It is one decision, on one day, for one small part of my life that I don't have to make.
And lately, I've realized how much I appreciate that.
Because by the end of some days, I'm not struggling to make decisions because I don't know what I want. I'm tired of having to decide things at all. That experience has a name: decision fatigue.
What's Actually Happening?
Think about how many decisions you make before lunchtime.
What time should I get up?
What should I wear?
What needs to happen first?
Do I respond to this email now?
What should I eat?
Can this wait?
Should I buy this?
Do I need to make that appointment?
What am I forgetting?
Some decisions barely register. Others require us to weigh information, consider consequences, manage competing priorities, or choose between several imperfect options.
And then we do it again. And again. And again.
Decision fatigue generally describes changes in how we make decisions after we've spent significant time making choices or engaging in mentally demanding decision-making.
It doesn't necessarily mean you become incapable of deciding. Instead, you may notice yourself wanting the easiest option, putting decisions off, becoming irritated when someone asks you another question, relying on whatever you usually do, or handing the decision to someone else.
Sometimes that can sound like:
“I don't care. You pick.”
Which, now that I think about it, might as well be my unofficial evening slogan.
Decision fatigue also overlaps with something I discussed in my previous post: cognitive load.
Your brain is already processing information, remembering things, switching between tasks, solving problems, and managing responsibilities. Decision-making becomes another demand placed on that system. The more your brain is carrying, the less appealing one more decision can feel.
The Science and Research Behind Decision Fatigue
Decision fatigue sounds intuitive, but the science is a little more complicated than some popular explanations make it seem.
Older discussions sometimes described decision-making almost like a battery: make enough decisions and eventually your supply of willpower runs out.[1]
Current research suggests it isn't quite that simple.[2, 3]
Researchers are still working to understand exactly when repeated decision-making affects later choices, which types of decisions are most demanding, and how factors like stress, workload, motivation, time pressure, and the environment contribute. Some studies show evidence of decision fatigue, while others are not so clear. Researchers have also pointed out that the term itself hasn't always been defined or measured consistently, which makes the evidence harder to compare.
What we do know is that making decisions requires mental processing. You probably don't need a research study to tell you what that feels like.
You've likely experienced it.
What Decision Fatigue Can Look Like in Real Life
For me, therapy is a good example.
During one session, I might be listening to a client while simultaneously considering:
Do I interrupt here? Do I let them keep going? How do I phrase this? Which intervention makes the most sense? Is this the right moment to challenge something?
Those are purposeful decisions, and they're part of doing my job. But then another client comes in. And I do it again.
Then there are decisions about running a business. What should I post? What podcast topic should I cover? What should the next blog be about? What resource would actually be useful?
Then I leave work and my regular life is waiting. What's for dinner? When are we doing this? What needs to be ordered? What appointment needs to be scheduled? What are we doing this weekend?
At that point, you can probably understand why I've even considered joining a gym where someone simply tells me what workout to do.
I don't necessarily need more motivation. Sometimes I just don't want my free time to require another round of decisions.
Your version may look completely different. Maybe you stare at Netflix for 20 minutes and never choose anything. Maybe you keep ordering the same meal. Maybe you're perfectly capable of making important decisions at work but feel irrationally irritated when your family asks what's for dinner. Maybe you leave things sitting in your online shopping cart because comparing five nearly identical options suddenly feels impossible.
Maybe you're the person saying:
“I genuinely don't care. Just choose.”
That isn't automatically a sign that something is wrong with you or that every difficult decision is caused by “decision fatigue.”
But it can be useful information.
You may simply have reached a point where one fewer decision sounds really good.
Practical Tool: Create More Defaults
If repeated decisions are adding unnecessary mental work to your day, one of the simplest things you can do is identify the decisions you don't actually need to keep making.
Create defaults. Fast Food Friday is one of mine.
I already know Friday dinner isn't something I'm planning or cooking. Even better, I've mostly handed the actual restaurant decision over to my kids.
One less decision.
Your defaults don't have to involve food.
Maybe Tuesday is always laundry day. Maybe you have a standard grocery list. Maybe you follow a workout program instead of designing a new workout every time you exercise. Maybe you create three go-to outfits for work. Maybe you choose designated days for administrative tasks instead of deciding every morning when you'll get to them.
The point isn't to make your life rigid.
It's to stop spending mental energy on choices that don't need fresh consideration every single time.
Ask yourself:
What is one decision I make over and over again that I could make once instead?
Start there.
You don't have to eliminate every decision from your life. But you might be surprised by how nice it feels to know that tonight, somebody else is picking dinner.
Related Ariza Inspire Content
Decision fatigue is only one piece of the larger conversation we're having this season about the mental load.
If this article feels familiar, start with my previous post, Why Your Brain Feels Overloaded: Understanding Cognitive Load in Everyday Life. It explains why your brain can start feeling “full” when you're constantly remembering, planning, switching tasks, and processing information.
You can also follow The Ariza Inspire Podcast this season as we dig deeper into cognitive load, task switching, decision fatigue, unfinished tasks, executive functioning, and the everyday mental demands that can leave you feeling exhausted even when it doesn't look like you've done that much.
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One of the things I want Ariza Inspire to do is make mental health information feel understandable, practical, and relevant to real life.
Not just: “Here's the psychology.”
But: “Here's what this might look like in your life—and here's what you can do with it.”
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You'll get new blog posts, podcast episodes, resources, and practical mental health tools delivered directly to you without having to remember to come looking for them.
Which, considering we just spent an entire article talking about reducing unnecessary decisions, feels pretty appropriate.
Ariza Inspire provides mental health education and resources. This content is not therapy and is not a substitute for individualized mental health treatment.
References & Further Reading
The following research informed the discussion of decision fatigue and its underlying theories.
[1] Vohs, K. D., et al. (2008). Making choices impairs subsequent self-control: A limited-resource account of decision making, self-regulation, and active initiative. Journal of Personality and Social Psychology, 94(5), 883–898.
[2] Dang, J., et al. (2021). A multilab replication of the ego depletion effect. Social Psychological and Personality Science, 12(1), 14–24.
[3] Grignoli, N., et al. (2025). Clinical decision fatigue: A systematic and scoping review with meta-synthesis. Family Medicine and Community Health, 13(1), e003033.
