How does "The gratitude visit" work?

Gratitude is amplified when it’s expressed and witnessed rather than just felt privately. Composing a specific letter forces you to articulate exactly what the person did and why it mattered, and delivering it in person creates a shared emotional event that strengthens the relationship. The combination of expression and connection is what makes the effect unusually large.

How does "Use your signature strengths in a new way" work?

Engagement and accomplishment rise when you work from your strengths rather than grinding against your weaknesses. Identifying signature strengths makes them salient, and using one in a novel way each day forces fresh application instead of passive recognition. This produces frequent experiences of authentic, absorbing activity, which feed well-being over time.

How does "Audit your life against PERMA" work?

Well-being is multidimensional, so optimizing one pillar (say, accomplishment) while starving another (relationships) leaves you flourishing on paper but flat in practice. Auditing across all five of PERMA surfaces the neglected pillar, which is usually where the highest-leverage change lives. The model’s value is diagnostic: it stops you over-investing where you’re already strong.

How does "Savoring positive experiences" work?

Pleasant experiences are often over before we register them because attention moves on fast. Savoring — pausing to notice, dwell on, and share a good moment — extends the positive emotion and lays down a richer memory you can revisit. It directly targets PERMA’s positive-emotion pillar by harvesting more well-being from experiences you’re already having.

How does "Deliberate acts of kindness" work?

Helping others reliably improves the helper’s mood through connection and a sense of meaning, and it shifts attention outward, away from self-focused rumination. Clustering several kind acts into a single day appears to produce a more noticeable boost than spreading the same acts thinly, likely because the concentration makes the effect salient enough to register.

Positive Psychology (Martin Seligman)

What is positive psychology, and which of its interventions actually work?

PERMA and the well-being exercises, graded honestly on the evidence

Short answer

Martin Seligman’s positive psychology studies what makes life worth living, organized around the PERMA model — Positive emotion, Engagement, Relationships, Meaning, and Accomplishment. Several of its signature interventions, including three good things, the gratitude visit, and using signature strengths, have genuine randomized-trial support for raising well-being and lowering depressive symptoms.

Positive psychology reoriented the field from only fixing what’s broken to also building what’s strong. Its lasting contribution is a set of testable interventions, not just a philosophy. Below are the core practices, each with the mechanism that makes it work and an honest read on the evidence — which for several of these is genuinely strong.

The practices (6)

Why it works

Attention is biased toward threat and what’s wrong; deliberately recalling what went well retrains it toward the positive that’s already present. Writing the "why" matters because it pushes you to identify your own role and the controllable causes, building a sense of agency alongside the gratitude. Done nightly, it gradually shifts the default scan of the day.

How to do it

1Each night, write three things that went well that day — small ones count.
2For each, write why it happened, including any part you played.
3Keep it up for at least a week; the benefit comes from the repeated reframe.

Evidence

RCT / meta-analysis

Three good things is among the most replicated positive-psychology exercises, with randomized trials finding it can increase happiness and reduce depressive symptoms for months after a one-week practice.

Honest caveat: Effect sizes are modest and tend to be larger for people who keep doing it; benefits fade if the practice stops.

Common mistake: Listing the events but skipping the "why," which turns it into a bland diary entry and drops the agency-building part that drives much of the effect.

Go deeper on this practice →

Practice this with IX Coach

Reading about a practice changes nothing on its own. IX Coach turns these into a guided, adaptive routine — discerning where you are in real time and walking the practice with you, session after session.

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