For years I used a large whiteboard instead of a diary

Work, side projects, life admin, travel, appointments... everything lived in one visual space, evolving over time.

The system eventually became Haftio.

I wrote about the original setup, how I used it, and why it worked for me:

https://medium.com/@amir_1992_/the-planning-system-i-ended-up-building-for-myself-86b1baa689a8