A mid-year decision audit is a structured review of the significant choices you made in the first half of the year. The goal is to surface the gap between what you expected when you decided and what has actually happened — and to identify one decision that needs a course correction and one that deserves to be doubled down on. It takes two to three hours and produces more useful insight than most quarterly reviews.
Why this decision is harder than it looks
The mid-year period is deceptive. You are past the January energy but well before the year-end pressure. There is no deadline attached to a mid-year review, which means it is easy to defer. And unlike reviewing a specific decision that produced a clear outcome, a mid-year audit asks you to look at decisions that are still in progress — which feels uncomfortable.
The deeper difficulty is that most people do not record their decisions with enough specificity to review them later. They remember what they decided but not what they expected, not why they expected it, and not what assumptions they were making at the time. Without that baseline, there is nothing specific to compare against — and the review collapses into a general feeling about how the year is going rather than a diagnostic about how your thinking is working.
This is precisely why a decision journal matters. If you recorded your major decisions with explicit predictions, the mid-year audit becomes a concrete comparison exercise rather than a memory exercise.
The framework: Decision Journal Review with Second-Order Thinking
The core of the mid-year audit is straightforward: for each significant decision made in the first six months, answer three questions. What did I expect when I made this decision? What actually happened? And: if I knew at the time what I know now, would I have decided the same way?
The third question is the most important, and also the most commonly misapplied. The goal is not to punish yourself for decisions that turned out badly but were reasonable at the time. The goal is to identify cases where the outcome gap points to a systematic thinking error — a bias, a missing assumption, an overconfident prediction.
The second-order thinking lens adds another dimension. First-order thinking asks: did this decision produce the result I wanted? Second-order thinking asks: what are the downstream effects of this decision that I did not anticipate, and how should I factor them into what I decide next? Many mid-year reviews only look at first-order outcomes. The second-order effects are often more consequential.
For example: you made a hiring decision in January that looked correct at the time. The person joined and is performing adequately. First-order assessment: decision was fine. Second-order assessment: the hire has changed the team dynamic in a way that is slowing down two other people. The first-order view says nothing to do; the second-order view says there is a problem that will compound over the next six months if unaddressed.
The audit is not complete until you have identified one decision that needs active course correction and one decision that deserves to be reinforced or expanded. Both outputs are necessary. An audit that only surfaces problems tends to produce paralysis; one that also identifies what is working well produces constructive momentum.
Completion Bias
Completion bias is the psychological drive to finish what we have started — to check the box, to close the loop — independent of whether continuing produces the best outcome. It is a close relative of the sunk cost fallacy, but it operates at a different level: not "I have already invested too much to stop" but "stopping feels like failure, so I will keep going."
In a mid-year audit, completion bias shows up most clearly when reviewing in-progress commitments that are underperforming. The instinct is to frame them as recoverable and continue. The audit's job is to apply a neutral test: if this project or decision were presented to you fresh today, with everything you currently know, would you start it? If the answer is no, completion bias is probably the primary reason you are still in it.
The mid-year is the right moment to apply this test precisely because there is still six months remaining. Decisions corrected in July have time to produce better outcomes before the year closes. Decisions deferred to December do not.
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Step by step: how to run your mid-year audit
Step 1: List your significant decisions from the past six months. Aim for three to five. Include professional and personal decisions. A decision is significant if it involved meaningful resources (time, money, attention) or if the outcome matters over a multi-year horizon. Exclude routine choices.
Step 2: For each decision, write three lines. What did you expect when you decided? What actually happened? What is the gap, and what does it tell you about your thinking at the time?
Step 3: Apply the fresh-start test to each in-progress decision. Would you start this today if you were looking at it for the first time? If yes, continue. If no, write down what it would take to change course and what is stopping you.
Step 4: Identify one decision to course-correct. Choose the one where the gap between expectation and reality is largest and where action in the next 90 days would change the outcome. Write one concrete next step.
Step 5: Identify one decision to double down on. Which decision is producing better results than you expected? What would it look like to invest more there in the second half?
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Frequently asked questions
How often should you audit your decisions?
A formal audit twice a year is sufficient for most people: once at mid-year (June or July) and once at year-end. The mid-year audit is specifically useful because it falls while there is still time to correct course before the year closes. Ad hoc reviews after major outcomes — a project that failed, a hire that did not work out — are also valuable, but the scheduled review ensures you are not only learning from negative outcomes.
What if I realise I made a significant mistake six months ago?
Recognising a past mistake is the output you are looking for — not a failure of the audit. The question that follows is: is the mistake still correctable, or is it a sunk cost that should inform future decisions without driving current ones? If it is correctable, the audit gives you the opening to act. If it is not, the value is in understanding what thinking error produced it, so you can catch it earlier next time.
How do you change course on a decision without falling into sunk cost paralysis?
Separate what you have already spent (time, money, effort) from what you will spend going forward. The past investment is gone regardless of what you decide next. The relevant question is: given where I am now, does continuing produce better expected outcomes than stopping or changing direction? Framing the decision from the current position forward — rather than from the original starting point backward — is the practical way to avoid sunk cost paralysis.
What makes a good mid-year review different from a general reflection?
A good mid-year review is decision-specific, not mood-based. It does not ask "how am I feeling about this year?" It asks: what did I decide, what did I expect to happen, what actually happened, and what does the gap tell me? The structure forces specificity. A general reflection tends to reinforce existing feelings; a decision audit surfaces patterns in your thinking that you can actually change.