Meditation/mindfulness/breathing exercises

This was it, thank you so much!

After trying a bunch, I’m using Obsidian + <your choice of sync plugin> now. Good thing with Obsidian is your notes are ultimately a bunch of plaintext files, so you can do whatever you want with them, and it comes with clients for most platforms.

Another option is Trilium, it is pretty powerful, and has a webapp so as long as you can access a browser, you’ll be able to access your notes. https://github.com/zadam/trilium