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I’ve been seriously considering using Logseq for this reason. When I first started with Obsidian I used it that way, but the more I put in it the more I started organizing everything. It became less of a journal and more of a repository for long form stuff. I’m thinking about using both just so I have a dedicated tool just for the journaling side of things.
I use different editors for different purposes, e.g., Obsidian for long form and planning, OneNote for meetings. I wouldn't overthink it, though, and just use the simplest tools available. I use Sublime Text 3 with a few shortcuts to add the current timestamp, etc. and log everything in a long file. I was too ambitious in the past and wanted to learn how to use Emacs for everything, but it just held me back, and I en…
I have a similar system to you, but getting things in and out of OneNote is such a massive pain.
Everything I have tried requires significant reformatting (even Word).