Someone asks me to explain the idea about happiness again. I am standing beside a wall in the evening, with the street behind me, trying to put a whole pattern into less than a minute.
You work towards something. You reach it. But your expectations have grown while you were climbing. The place you wanted to reach becomes the place that is no longer enough.
That is what I wanted to get at in this video: gratitude gives you somewhere to create from, without making the next achievement the price of enjoying what you already have.
First, the subtraction needs correcting
In the video and caption, the formula puts expectations before reality: “happiness = expectations − reality.” Taken literally, that goes in the wrong direction for the point I am making. Lowering expectations would make that number smaller.
A clearer illustration is:
Surprise gap = actual outcome − expected outcome.
If the result exceeds what you expected, the gap is positive. If it falls short, the gap is negative. This is a way to describe the comparison. It is not a complete equation for a person’s happiness.
Imagine three versions of a game round. Each ends with 50 points. Only the expectation changes:
| Expected | Received | Gap |
|---|---|---|
| 20 | 50 | +30 |
| 50 | 50 | 0 |
| 80 | 50 | −30 |
The result did not change. The comparison did. Moving the expectation from 80 to 20 changes this gap by 60 points, because 30 − (−30) = 60. It does not prove a 60-point increase in happiness. These are invented game numbers, not observations from the video or a study.
That is why a perfectly good result can still arrive feeling like a disappointment. We may be comparing it with something that existed only in our heads.
What the research actually measured
A 2014 study by Robb Rutledge and colleagues examined repeated happiness ratings during reward decisions: 26 people in an initial laboratory experiment and 18,420 in a smartphone replication. Its model combined recent rewards, expectations and the difference between expected and received rewards, weighting recent events more heavily. It concerned momentary happiness, not a formula for lifetime satisfaction.
A preregistered independent replication published in 2021 mostly confirmed the original behavioural findings. That strengthens the evidence for the model in this kind of task; it does not make a slogan a universal law.
There is also an interesting complication. Rutledge explains that looking forward to something can itself make us feel better before it happens. Expecting every plan to fail would throw that away. His argument is for realistic expectations, not permanent pessimism.
So I would separate an ambition from a demand. “I want to build something worthwhile” gives me a direction. “Until everyone recognises it, none of this counts” makes the present disappear.
Gratitude before the next thing
The second half of the video matters more to me than the formula. I talk about becoming thankful for what is already there, then creating from that place.
There is research behind paying attention this way. In three experiments reported by Robert Emmons and Michael McCullough in 2003, gratitude-focused groups improved on several wellbeing measures compared with comparison groups, but not on every measure. Positive feelings were the most consistent finding. That supports a possibility, not a guarantee for every person.
For me, the useful question is concrete: what am I treating as ordinary today that I would miss tomorrow? A person who answers my call. Time to make something. A conversation I did not have to earn with another achievement.
I can still want more. Gratitude does not require abandoning standards, tolerating mistreatment or pretending practical problems are imaginary. The video makes a broad claim about reality not being the main problem; I would keep that as a challenge to examine my own expectations, not a judgment on somebody else’s circumstances.
This connects with my reflection on noticing an ordinary good moment. An unfinished life can contain something worth appreciating now.
Before chasing the next thing, I can name one thing I value, identify one expectation I have added to it, and choose one useful next action. No score. No need to perform happiness.
I want to build the next chapter without making this one worthless.
Sources and calculation notes
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Video and correction: original caption, audio and on-screen text reviewed. The subtraction order is corrected explicitly; the broader message about rising expectations and gratitude is preserved.
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Evidence: Rutledge et al., 2014, DOI 10.1073/pnas.1407535111; Vanhasbroeck et al., 2021; Rutledge’s explanation, 2021; Emmons and McCullough, 2003. These are distinct studies and commentary, not evidence that the video’s simple formula predicts life satisfaction.
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Calculation: illustrative points only: 50 − 20 = 30; 50 − 50 = 0; 50 − 80 = −30; 30 − (−30) = 60. Equal-length bars show the fixed outcome of 50. Reproducible inputs and source notes.
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Original video and thumbnail: Eduard Luta on TikTok. Published 2026-09-29. Research checked 30 September 2026.