I created this tool that will export your DayOne journal entries into individual jpeg files with the entry text as the caption metadata of the jpegs.
I use this export to build a photo book in Lightroom (using the Book Module). Unfortunately there doesn't seem to be a way to maintain formatting of the entries (newlines, boldness, etc) so you'll have to manually go into each entry on Lightroom and fix the formats.
- Clone this repo
gem install bundler(if you don't already have it)
rake(export the last 30 days)
rake from=2014-01-01 to=2014-12-31(export 2014)
rake include='Tag1,Tag2' exclude='Tag3'
exclude can all be used together.