Daylio is an amazing journaling and mood-tracking app, but you may want to store your journals also in an Obsidian Vault. For that you need a "translator" (or a parser, more technically speaking) that knows how to transfer Daylio entries into Obsidian notes.
If you are an end-user and wish to just convert your .csv file into markdown:
pip install obsidian-daylio-parser
daylio_to_md --help
If you are a developer and wish to contribute to the project, clone this repo and submit your commits in a pull request.