I was inspired by this video and started doing it today - wanted to share in case its helpful for anyone else.
The tl;dr version: Buy a pocket-sized notebook like a Field Notes or similar Moleskine-style one and write down 8 critical tasks daily. They fit perfectly if you leave a blank row in between each for notes or extra info. Cross off each one as you complete it with the goal of completing all 8 every day - make sure they're critical to your work, family, health, etc goals, make sure they're bite-sized and specific.
More inspiration for carrying a pocket notebook in the 2nd video.