The hidden drain of decision fatigue

Angela Stirling • January 24, 2025

As we kick off the new year, many of us are excited to embrace fresh beginnings, set new goals, and maybe even tackle those pesky resolutions. But if you’re feeling more drained than invigorated, you’re not alone.

In fact, one in every five adults worldwide has experienced general fatigue lasting up to six months, and the condition is so frequent that it even has its own acronym: TATT (Tired All The Time).i


But for all this ubiquity, scientists' understanding of fatigue – what causes it, how it changes our bodies and brains, as well as how to treat it – is incredibly limited. There are some obvious contributors to fatigue. We all know how lousy we can feel after a few late nights and that stress can be a massive drain on our energy levels. Throw in a bit of a sedentary lifestyle and some not great dietary decisions and you can have the perfect storm for not feeling particularly peppy.

However, there is one factor that can contribute to that feeling of exhaustion that you might not even think of when you consider what drains you – and that’s decision fatigue. Understanding this phenomenon and how it can impact your energy levels – and decision making - might just be the key to reclaiming your energy, clarity and get you back on track to living your best life.


What is decision fatigue?

Decision fatigue refers to the mental exhaustion that accumulates from making so many choices throughout the day. It is estimated we make between 33,000 to 35,000 decisions a day.ii In a world filled with endless options—from what to wear and what to eat, to larger life decisions—it’s easy to see how our brains can become overwhelmed.


The science behind decision fatigue

Research indicates that our cognitive resources are limited. Psychologist Roy Baumeister’s research involved participants facing a series of decisions which resulted in lower self-control and poor decisions as their decision fatigue increased.iii This underscores the concept that the more choices we make, the less energy we have left for future decisions.


Science has recently reinforced these findings with a discovery from Paris Brain Institute that the culprit appears to be a brain chemical called glutamate that gradually builds up in the brain and can impede effective decision making.iv


Symptoms of decision fatigue

Recognising the signs of decision fatigue is crucial for taking action and the kind of signs to watch for include indecision, avoiding making decisions, mood swings, mental fog and difficulty concentrating, and even physical exhaustion.


A vicious cycle

The consequences of decision fatigue can create a vicious cycle. When you’re mentally drained, you might resort to unhealthy coping mechanisms, such as choosing fast food over nutritious meals or skipping your workout. These choices can lead to further physical fatigue, compounding your feelings of tiredness. Additionally, the stress you feel when your decision-making is affected can negatively affect your sleep quality, leaving you even more exhausted.


Strategies to combat decision fatigue

Fortunately, there are several strategies you can use to manage decision fatigue and boost your energy and your capacity to make sound decisions:

  1. Limit choices: Simplifying your options can significantly reduce mental strain. Consider planning your meals for the week or curating a small wardrobe to streamline daily decisions.
  2. Prioritise important decisions: Tackle significant choices when your mental energy is highest, typically in the morning. Save less critical decisions for later in the day.
  3. Take breaks: Short breaks throughout the day can help refresh your mind. A quick walk, a few minutes of stretching, or even a short meditation session can recharge your mental resources.
  4. Practice mindfulness: Engaging in mindfulness practices can help reduce stress and improve focus, making decision-making feel less daunting.


While decision fatigue is significant, it’s important to recognise that there are other potential reasons for ongoing tiredness. If you find yourself feeling excessively tired for an extended period, it’s wise to consult a medical practitioner to help identify any underlying health concerns.


Finally, remember, it’s completely normal to feel overwhelmed by the multitude of decisions we face daily but being mindful of the toll they can take is the first step towards reclaiming your energy – because you deserve to feel vibrant and empowered in your decision making.


i Why do some people feel tired all the time - BBC

ii How Many Decisions Do We Make In One Day - PBS North Carolina

iii Ego depletion: Is the active self a limited resource? - APA PsycNet

iv Cognitive fatigue: new insight on biological mechanisms - Paris Brain Insitute

By Nikki Ashurst • November 2, 2026
Many Australians don't know how their super fund has performed or what it invests in. Are you one of them? Here's what to check and why it matters. Do you know how your super fund performed over the last two years? Many Australians don’t and are working towards their financial future without fully understanding one of their most important assets and without a clear plan for how their super may support them in retirement. That's not surprising, as many people view super as something that should run quietly in the background while they're busy with careers, families and everything else that life throws at them. But when you’re not sure what’s happening behind your balance, it’s harder to know whether you’re on track, whether your current approach reflects your goals or what opportunities might be available to help you make the most of what you’ve built so far. Your super isn't sitting in an account, it's invested Super is invested by a fund on your behalf across a mix of assets, with those investments working to grow your balance over time. Those include: Shares Ownership in Australian and international publicly listed companies. Their value can rise and fall, sometimes substantially over short periods but shares can provide capital growth over the long term. Property and infrastructure Real assets like office buildings, shopping centres, airports and energy networks. They can produce income and don't always behave in the same way as share markets, helping diversify investment holdings. Fixed interest and bonds Lending to governments and companies in return for interest. They can provide regular income and be steadier than shares, although returns and risk vary depending on the investment. Cash Generally, the most stable and lowest risk investment type. It can provide stability and faster access to money but typically offers lower longer term return potential. The investment option you choose determines the mix of assets held in your super based on your risk appetite. Most super funds offer options from conservative to high growth. If you’re young, a growth option with a higher exposure to growth assets like shares could offer higher returns over time – but it also comes with higher risk. As retirement nears, you might want to consider a more conservative approach with more defensive assets, like bonds for example to protect your savings. If you've never made a choice, you're probably in your fund's default option, which is designed to suit a broad membership. It’s worth knowing whether the mix you're in matches your circumstances and goals, including how far you are from retirement. Why performance alone is not a true comparison If you're thinking about how your super compares, returns are often where people start. The trouble is that a return figure means nothing without context: What it's being compared to Growth and conservative options invest differently and with different levels of risk. Compare like with like or the comparison may not be genuine. The comparison period A single year can be heavily influenced by short term market conditions. Super is measured in decades, so five, seven and ten year returns tell you far more about whether a fund is consistently doing its job, albeit not a predictor of future performance. Fees and tax Published returns should reflect investment fees, costs and tax but administration fees may be charged separately from your balance. Two funds quoting the same return can leave you in meaningfully different places once all fees are accounted for. Then there are the things that returns can't show you at all. For example, what insurance is attached to your account and what it's costing you, whether the fund offers guidance, tools and advice or simply sends a statement once a year. Another consideration maybe the level of support available when you need it. When comparing funds, it's worth looking at the full picture, including performance, fees, investment options, retirement support and member benefits. What today’s decisions mean tomorrow To understand how your super stacks up, start here: Find your investment option It's on your annual statement and in your online account. Look at what's in it Your fund publishes the asset allocation (shares, cash etc.) for each investment option. Check the long-term return for that option Focus on five and ten year returns, not just last year and compare them with equivalent options. Understand the total cost Add together administration fees, investment fees and insurance premiums as an annual dollar figure. Comparing super is about working out which option will perform best for you. Before you jump in, it’s worth understanding what's behind the numbers so you can make decisions based on more than a headline return. Knowing where you stand is the first step A super balance tells you where you are today. Understanding how your super is invested, how it compares and whether it's aligned with your goals helps show whether you're heading in the right direction. Source: MLC The information in this article does not take into account your objectives, needs and circumstances. We recommend that you obtain investment and taxation advice specific to your investment objectives, financial situation and particular needs before making any investment decision or acting on any of the information contained in this document. Subject to law, Capstone Financial Planning nor their directors, employees or authorised representatives gives any representation or warranty as to the reliability, accuracy or completeness of the information; or accepts any responsibility for any person acting, or refraining from acting, on the basis of the information contained in this document. Principal Wealth Management Pty Ltd trading as BMO Financial Solutions ABN 53 109 336 601 is a Corporate Authorised Representative (CAR 277821) of Capstone Financial Planning Pty Ltd ABN 24 093 733 969 Australian Financial Services Licence (AFSL) No. 223135.
By Jude Schofield • October 7, 2026
More Australians are choosing to take direct control of their retirement savings by establishing a self-managed super fund (SMSF) and according to the SMSF Association, Aussies now see their super as an important part of building and managing their overall wealth.