Write three good things and their causes each evening
Before sleep, write three specific good things that happened and — crucially — why each one happened.
Key takeaways
- What it is: Before sleep, write three specific good things that happened and — crucially — why each one happened.
- Why it works: The causal-attribution step is what distinguishes this from a simple gratitude list. Attributing positive events to stable, internal, and global causes ("I prepared well," "I attracted a good friend") builds explanatory style — the habitual way of interpreting good events — which is a core component of learned optimism. Repeatedly doing this gradually shifts the default attentional filter from threat-scanning to opportunity-scanning.
- Evidence: Backed by randomized trials / meta-analyses.
- Avoid: Writing the what without the why — a list of three good events with no causal attribution has much weaker effects than the full exercise, because it trains attention without training the interpretation of what is noticed.
Why it works
The causal-attribution step is what distinguishes this from a simple gratitude list. Attributing positive events to stable, internal, and global causes ("I prepared well," "I attracted a good friend") builds explanatory style — the habitual way of interpreting good events — which is a core component of learned optimism. Repeatedly doing this gradually shifts the default attentional filter from threat-scanning to opportunity-scanning.
How to do it
- 1Each evening, write three specific things that went well — not generally ("had a good day") but concretely ("my 3pm call went smoothly").
- 2For each, write one sentence answering: "Why did this happen?" — credit your own actions, a relationship you cultivated, or a pattern that reliably produces this.
- 3Keep entries in the same notebook or app; the cumulative record builds a counterfactual to negative-event salience.
- 4On weeks when nothing notable happens, write three ordinarily good things — "coffee tasted good, finished a task" counts.
What the evidence says
RCT / meta-analysisThe original RCT found significantly higher happiness and lower depression at one-, three-, and six-month follow-up for participants who continued the practice. Multiple subsequent replications have confirmed the basic effect.
Honest caveat: Effect sizes are modest (not transformative); effects decay when the practice is discontinued, which is why sustained use rather than a single week is recommended.
- — Seligman et al. (2005), positive psychology progress: empirical validation of interventions, American Psychologist
Common mistake
Writing the what without the why — a list of three good events with no causal attribution has much weaker effects than the full exercise, because it trains attention without training the interpretation of what is noticed.
IX Coach prompts the three-good-things exercise each evening with a structured field for both the event and its cause, and surfaces patterns across your entries over weeks.
Practice this with IX Coach →