We need to subtract before we can add.
We tend to treat goal pursuit as an additive exercise. We choose an aspiration and immediately start piling on new habits, new routines, new tools, and new systems. The logic feels natural: bigger ambition should require more action.
But for Keystone Goals, the identity-shaping goals that ask us to reorient our time, attention, and energy, this additive instinct quietly works against us. Time, energy, and cognitive bandwidth are finite, and behavioral science shows that adding more into an already saturated system without adjusting elsewhere rarely leads to stable progress. Instead, it increases emotional strain, diffuses attention, and sets us up for cycles of inconsistent follow-through.
Understanding why this happens, and how to counter it, starts with a closer look at the psychology of subtraction and opportunity cost awareness.
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Our Cognitive Bias Toward Addition
A growing body of research shows we instinctively default to “more” rather than “less,” even when subtraction would produce better results. Research by Leidy Klotz and Gabrielle Adams demonstrated in a 2021 Nature study that when people try to improve or optimize something, they overwhelmingly add.
In experiments where participants were asked to complete design tasks, organizational challenges, and even simple text edits, participants overwhelmingly chose to add new element, even when removing something would have been more effective in solving the problem.
In a simple experiment with LEGOs, where people were asked to level out an unlevel LEGO bridge, the majority of participants chose to add LEGO bricks to the structure instead of removing any. Our brains are wired to add – not subtract.
Three forces consistently drive this bias:
-
Addition signals effort and competence
People equate “adding” with competence and industriousness. Taking something away feels like doing less, even when it’s the smarter path. -
Subtraction is less salient.
Klotz and Adams found that the option to remove typically doesn’t occur to people unless they are specifically prompted. Our brains surface additive ideas far more quickly. In other words, we don’t typically think about subtracting. -
Loss aversion (a tenet of Prospect Theory) makes subtraction uncomfortable.
Giving something up - whether time, convenience, or a familiar routine - activates the emotional discomfort of perceived loss. Because of our strong aversion to loss, addition feels emotionally safer and less painful.
The implication is straightforward: without conscious intervention, we will instinctively overcrowd our lives when pursuing big goals.
Why Keystone Goals Expose the Limits of Addition
Keystone Goals require meaningful, sustained investment. Whether you want to run a marathon, write a book, deepen a relationship, or change your career arc, the behavior isn’t a one-off...it’s a long-term commitment. These goals demand sustained attention and structured action across weeks or months or sometimes even years.
Cognitive Load Theory, pioneered by John Sweller in the late 1980s, shows that working memory has strict limits. Once those limits are hit, additional demands don’t stack; they displace. When your cognitive load is already maxed out, adding new habits forces something else to give—usually through backsliding, inconsistency, ignoring, or burnout
We mistakenly assume we can “fit in” new behaviors without confronting the underlying constraints.
Additionally, these backslides don’t go away simply because the goal is big or important. In fact, they often intensify. That’s because when we are at cognitive capacity, we tend to revert to the status quo (i.e., what’s easy and comfortable).
This aligns with research on self-regulation: goals don’t fail because we don’t care enough. They fail because multiple meaningful intentions are competing for the same finite bandwidth. When we add without subtracting, the system destabilizes.
This is why subtraction is not optional. Yet… often the things we need to give up achieving our big goals are things that we enjoy or that are important to us. This makes the process that much more difficult.
The Hidden Weight of Opportunity Costs
One way to understand this is through a behavioral concept called opportunity cost awareness, which is about being aware of what you must give up when choosing a course of action.
There are implicit costs to pursuing your goals.
Christopher Olivola, Shane Frederick, and others documented this phenomenon through studies in consumer research; however, it is equally as prevalent in goal setting and adherence.
The reality is that most people underestimate or outright ignore what they must give up when pursuing a new goal. Because these costs aren’t immediate or visible, we don’t account for them. But they operate in the background, for example:
- Going to the gym might cost you sleep, study time, or doing other hobbies.
- Pursuing a promotion might cost you evenings with your family or really relaxing on your vacation.
- Learning a new instrument might cost you time spent maintaining a different skill.
- Starting a side business might cost you leisure, attention, and partnership equilibrium.
Because these costs aren’t always immediate, people fail to integrate them into goal planning. But whether or not we acknowledge them, they accumulate.
The behavioral science literature is clear: when these opportunity costs remain unmanaged or unknown, they strain motivation, impair decision quality, and erode well-being - each of which directly undermines goal pursuit.
Why Subtraction Works
When we remove commitments, expectations, and routines that no longer serve us, it creates the necessary conditions for big goals to take root. There are several reasons this mechanism is so powerful:
1. It reduces cognitive load.
Removing competing commitments frees working memory and attention, allowing the goal to receive more consistent focus.
2. It stabilizes motivation.
Motivation falters when goals compete for limited resources. Subtraction consolidates motivational energy rather than scattering it.
3. It enhances identity coherence.
When you give something up for a goal, you reinforce its importance. Sacrifice is a strong identity signal “This is who I am becoming.”
4. It acknowledges real constraints rather than fighting them.
Subtraction is an act of alignment. It builds a life that can actually support the aspiration.
A More Rigorous Way to Approach Big Goals
Before adding anything to your life in pursuit of your Keystone Goal (e.g., habits, routines, or commitments), pause and conduct a subtraction audit. Ask yourself:
What actions does this goal require, specifically? Estimate the actual time, not the idealized time (use base rates or estimate what you think a friend could do this in – make sure that you are not assuming everything will go smoothly).
Where in my current life would that time come from? Identify the activities that currently occupy equivalent bandwidth. Where will I take this time from?
What am I realistically willing to relinquish or reduce? This is the hinge point. Subtraction must be explicit, not implicit. Am I willing to give this up?
What are the short-term and long-term costs of that trade-off? Healthy goal pursuit weighs both timelines. Is the benefit worth the cost that it will take?
This process frees resources, but more importantly, it clarifies whether the goal is genuinely worth the trade-offs required. Subtraction forces honesty. It exposes priorities. It strengthens the foundation beneath the ambition.
A Reframe to Carry Forward
In essence, the key question for setting effective goals isn’t “How can I add this goal to my life?” The more accurate question is: What must I remove so this goal can thrive?
Keystone Goals succeed not because we stack more onto an already full life, but because we intentionally reshape our lives around what matters most. Sometimes the most important step forward is the one where you decide what no longer belongs.
Keep Shifting,
This Week’s Shift
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What will you give up in your life to make room for new pursuits?
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