Closest would probably be toxic positivity.

So what I have been doing on pen and paper (that I want to turn digital) is noting what I have done morning, afternoon and evening and my mood at each time out of 10. It’s not super complicated I guess. Although I don’t use it for the same purpose, I think the technique is called behavioural activation.

The reason an an app called daylio (not OSS) was recommended to me is because it also scheduled push notifications to submit entries at those times. With just a calendar event, I will get distracted and end up neglecting it, because even though the steps are simple, tapping to fill it in right away increases the chance instead of navigating.

Other than that key aspect yeah I’d say some kind of spreadsheet/CSV format could work well.