Did
What changed in the system today. Name the rule, the parameter or the file, not just "worked on code".
Decided
One choice you made, and why your identity would make it. This is the most important line.
Image
One output from today, saved as log/day-07.png. A photo of a test or a plot counts.
Stuck
One open question to start tomorrow with. If nothing is stuck, write what you are least sure of.