Decision fatigue: Signs, causes, and how to manage it

Reviewed by Brooks Baer, LCPC, CMHP

Written by

therapist.com team

Last updated: 05/21/2026

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Have you ever felt completely drained after a long day of making choices? Maybe you struggled to pick what to eat for dinner or felt too tired to decide on weekend plans. This mental exhaustion has a name: decision fatigue.

Understanding decision fatigue can help you recognize when your mind needs a break. It can also show you ways to protect your mental energy and make better choices throughout your day.

What is decision fatigue?

Decision fatigue (or “decision making fatigue”) is the impaired ability to make decisions and control behavior after making many decisions in a row.¹

Think of your brain’s decision-making power like a battery that slowly drains with each choice you make. Some parts of life (like parenting decisions, workplace projects, or navigating family dynamics) put a strain on the battery, draining it more quickly than others.

When this happens, your mental performance may pay the price. Without time to recharge, you might notice that choices that seemed easy earlier in the day feel impossible by evening.

The effect of fatigue on decision making shows up in many ways.² It can lead you to make impulsive choices, avoid situations where you need to make decisions, or settle for whatever seems easy instead of what you really want. As your ability to carefully weigh options decreases, you may find yourself taking a more passive role in decision-making.

Signs of decision fatigue

Decision making fatigue can affect your mind and body in many ways. According to research, it presents itself across three main dimensions: behavioral, mental, and physical. ³

Behavioral signs

• Avoiding decisions or procrastinating
• Acting more impulsively than usual
• Showing less persistence when faced with challenges
• Becoming more passive in situations requiring choices
• Becoming more irritated at any frustrations

Mental signs

• Struggling with complex thinking
• Having trouble reasoning through problems
• Relying on mental shortcuts or gut feelings more than careful analysis
• Problems with executive function

Physical signs

• Feeling tired even without physical effort
• Having less endurance for mentally demanding tasks

In certain workplace settings, such as health care, professionals experiencing decision fatigue often show declining compassion and empathy.⁴ They might make more conservative choices to play it safe, rely increasingly on default options, and feel less confident as their workday progresses.

Decision fatigue examples

Examples of decision fatigue often play out in everyday life. It may look like:

• Choosing the same lunch every day because deciding feels too hard
• Saying “I don’t care” when asked for your preference
• Buying items you don’t need just because they’re around

It can also show up in more serious situations. When making plans feels too exhausting, you may:

• Put off important financial decisions like reviewing your retirement accounts
• Avoid scheduling necessary medical appointments because choosing a date and time feels overwhelming
• Default to the easiest option when faced with significant life choices

If you’re noticing these signs of decision fatigue interfering with your daily functioning, consider reaching out to a therapist. A mental health professional can help you develop a plan to manage decision-making demands and protect your well-being.

What causes decision fatigue?

Research has identified three types of factors that can drain your decision-making ability in the course of a day: decisional, self-regulatory, and situational.⁵

“Decisional” factors: Making a series of decisions throughout the day depletes your mental resources. Each choice requires effort, and that effort adds up.

“Self-regulatory” factors: Controlling your attention, managing your emotions, and directing your thoughts all draw from the same mental energy pool. When you’re constantly regulating yourself, you have less energy left for other decisions.

“Situational” factors: Your environment and circumstances play a big role. Things like time pressure, complexity of choices, and lack of breaks can speed up decision fatigue.

Considering the sheer volume of decisions we’re asked to make in a day, it’s not surprising that decision fatigue is so common. One study estimated that the average US adult makes 35,000 decisions in a day.⁶

Certain jobs also carry an above-average decision burden. One study found that internal medicine clinicians make an average of 15.7 decisions per patient encounter and get interrupted once every eight minutes.⁷ Other demanding professions, both in and outside of healthcare, ask people to make a huge number of important choices in a day.

Risk factors

Some people face higher risks of experiencing decision fatigue. Fatigue effects tend to be stronger among people dealing with:⁸

• Chronic stress
• Socioeconomic disadvantage
• High daily decision loads
• Shift work
• Caregiving responsibilities
• Limited resources requiring constant difficult choices

Time of day and how you feel physically also matter significantly. For example, one study found that mental performance can be linked to blood sugar.⁹ As blood sugar levels vary, they affect your mental stamina and how well you can self-regulate.

Sleep deprivation has also been shown to make decisions difficult.¹⁰ Blood sugar and sleep are especially important factors to keep in mind for people working long or irregular hours.

Effects and consequences of decision fatigue

Decision fatigue doesn’t just make you feel tired. It changes the quality of your decisions in measurable ways.

When fatigued, people tend to take more passive roles in decision-making. They’re more likely to make impulsive or irrational choices.¹¹ This can be harmful in high-stakes situations where poor decisions have serious consequences.

One study focused on the nursing field found that decision fatigue led to:¹²

• Reduced quality and safety in patient care
• Less effective decision-making overall
• Increased job stress
• Higher risk of burnout
• Decreased well-being

Decision fatigue can create a downward spiral. Poor decisions made while fatigued can lead to stress, which makes fatigue worse, ultimately leading to more poor decisions.

How to manage decision fatigue

The good news is you can take steps to manage and reduce decision fatigue. One study found there are two main categories into which decision fatigue preventions fall: demand reduction and demand management.¹³

Demand reduction

“Demand reduction” strategies aim to lower the number of decisions you need to make in a day. This may look like:

Creating a default option: Having go-to choices for low-stakes decisions (like what to wear or eat for breakfast) saves mental energy for more important choices.

Standardizing wherever possible: For workplace decisions, making processes that can be repeated leads to fewer decisions in a day.¹⁴ This might mean creating checklists for daily tasks or agreeing on strict guidelines to follow when certain issues appear.

Taking regular breaks: Stepping away from decision-making helps restore your mental energy. Even short breaks can make a difference. Remember that stepping away and coming back refreshed can be more efficient than trying to “push through” when you feel overwhelmed.

Demand management

“Demand management” strategies help you handle necessary decisions more effectively. They can include:

Changing up your schedule: If possible, adjust your schedule so the most important decisions happen when you’re freshest. Some people think most clearly in the morning, while others may be at their best in the evening after they’ve had time alone to recharge.

Using self-regulation: Stay aware of your mental state. When you notice fatigue setting in, slow down, be deliberate, and communicate how you’re feeling.

Seeking support: Don’t hesitate to ask for input from others. Using guidelines, consulting colleagues, or getting a second opinion can lighten your decision-making burden.

If you’re in a leadership position or managing a team, you can help reduce decision fatigue by:

• Keeping your team fully staffed
• Providing clear guidelines and expectations
• Checking in about workloads
• Building in regular breaks for team members
• Encouraging employees to collaborate and lean on each other

Getting help with decision fatigue

Decision fatigue is a normal response to the mentally demanding world we live in—not a personal failing. If you’re feeling overwhelmed, stuck, or fearful of burnout, speaking with a therapist can help. Browse our therapist directory to find a licensed professional who can support you.