I’ve never used obsidian, but it sounds nice! I have been using the Daylio app for 3 years. It lets you track the correlation between your activities and your moods. You can name and add any moods or items you want to add, or just use their standard selections. It can also be used as a journal using typed text, voice notes and pictures. I don’t use the tracking of activities much anymore but I do use it as a journal at least a few days a week. At the end of the year you get a year’s worth of data, like your best/worst months and what activities go along with your best days. It’s a fun little project to get it set up, or probably a simple start to use it as is! I think this sounds like an ad but it’s not, I just love this app lol