Gratitude journaling is the most recommended hack in the genre. The biggest pooled analysis so far, 145 studies, nearly 25,000 people, 28 countries, found a small effect on wellbeing. Correct for the studies that never got published and it stays small; it doesn't disappear. Evidence: decent So: helps a little, on average. Not a baseline change, whatever the podcast said.
Two things pushed the number up in that analysis: trials that were properly randomised, and studies that combined methods instead of journaling alone. Evidence: decent Telling a person plus writing it down is the cheapest combination I can think of; that exact pair hasn't been tested on its own. Evidence: worth trying
The written part isn't a diary. One line, with a date, in whatever you already carry. The saying part is the one that feels odd. For your partner, name the specific thing; that version has its own evidence.
Same theme: Holding a good moment
Holding a good moment
Ask how the day actually felt, once
Pick one ordinary stretch today, the commute, the kids' bedtime, an hour with mates. Afterwards, score how it felt while it was happening. Then score the day as you'd answer if asked. Compare. Once, not a log.
5 minEvidence: worth trying
Holding a good moment
End it on the high note
Put the best bit last. The film after the chores, the walk after dinner, the warm line at the end of a hard talk. Not in the middle.
no timeEvidence: worth trying
Holding a good moment
Revisit one good memory a week
Once a week, pick one good moment from the last year. Two minutes back in it. Where you were, who was there, what it sounded like.
2 minEvidence: worth trying