Thanks. Are you planning on selling this as a service? Maybe with blockchain verification? How about creating a marketplace so that others can share journal templates? Is there iCloud backup? Would be nice to have private messages between members and social status that people can "like".
For those unaware: I think parent poster is being sarcastic.
EDIT: my original comment was "Don't know why you're being downvoted. That's sarcasm people!". It was flagged. I wondered why and decided to check the HN guidelines. Sure enough, I violated one: Please don't comment about the voting on comments. It never does any good, and it makes boring reading.
All hilarious mocking aside (although you should probably turn this into a SaaS somehow and get it in the cloud), I've been using a simple .txt file for journaling since i started first my professional software gig in 2014.
It has gone through multiple forms, once where i created a new file everyday, and it wasnt automated much. One day I realized I could be even MORE lazy and started automating a bit. Now i have one file, with a heading for each day. I have the vim command saved as an alias now 'journal'. It opens up the file, moves to the end, and enters insert mode :p
alias journal='vim "+normal Go" +startinsert /worklog/start_20160426'
I'll second TiddlyWiki. I've used it for several years and became a fan early on.
These days you might run across some hiccups in getting it to work in your browser of choice. Over the years the browser vendors became less and less inclined to allow javascript and extensions attain local file editing permissions. That's pretty reasonable, but annoying.
A pretty decent alternative that I've been using for months, now, is an app called Tiddly Desktop. It's an NW.js-based app so it has no trouble accessing the local filesystems.
:-)