Exactly for this purpose - using TG as a "personal logging/journaling" platform - I've long thought of building a bot. Since Telegram's bot API is
very robust, simple to use and set up, it can be done easily.
I've imagined the bot to:
* save each message in the chat as a separate "log" in a text file that is saved on an online backup. This can be a private GitHub repo, OneDrive, etc.
* give a short summary/statistics of how much I wrote
* tag message with the hashtags I use
...etc.
I haven't got time to start it, but hopefully I do soon. How would you like this sort of a personal bot?