Summary: I will try out gratitude journaling for a period of month, either in the form of writing on paper or chatting with my partner. Will this have a positive, neutral or negative feeling on my overall mood?

Details: I consider two alternatives.

One is a traditional way of listing 3 things one is grateful for (pen and paper). Another option is to chat with one's partner about things one is grateful. I call these options PAPER and CHAT above.

I will randomly choose one of these and do that for 30 days as consistently as I can. I will also take notes of general mood (both quantitative and qualitative), and have already taken notes before starting (control group).

Three of the answer choices will automatically resolve N/A as I pick one of the two options above. Two will resolve NO and one will resolve YES.

As I'm not sure how to make this very rigorous, I'll be resolving the market according to my subjective judgment. I will consider there having been a positive effect if I think this was "worth the effort", quite likely requiring there to be an effect noticeable even without quantitative data. I will consider there having been a negative effect if there are noticeable and not-small cons (in addition to the time spent on journaling) at the level where I would definitely mention them to a friend who considers starting journaling. If neither of these hold, I'll resolve to neutral.

I'm open to suggestions about other ways of journaling and possibly may include them to the market.

I won't bet on this market.