I found this journal book in a store[1], each page is a date and has place for 5 years' worth of entries, the line limits make it easy to do every night (it takes 1-2 minutes and you don't think "There's so much I have to write..!") but also limits the amount of stuff I can fit in.

I've noticed I've been writing "Unproductive at work" for many many years now, I should change either the productivity level or my perception of it.

[1] https://undertherowantrees.co.uk/shop/some-lines-a-day-5-yea...