Keeping the journal on the blockchain will certainly ensure it is never lost. I do a journal several times a week, old school - write it in a book called "the artist's way, the morning pages journal."

Its more so a quick thought process purge and then I write out gratitudes and do a quick 5 min meditation to some music. The gratitude piece is the most impactful for me.

Thing about journals, most people are pretty private about it, it will be interesting to see who is willing to do it on steemit. I'm an open book, but don't know that I will add it to my already too long list of steemit related activities.