Pin the hours so they do not slide

A written weekly maximum is the pin. Extra hours without it slide into sleep and the day job.

A pin block does not do the work. It keeps the piece from sliding. Side hours work the same way: write a weekly maximum and hold it, so new jobs cannot push the week down the bench.

What to pin

A weekly ceiling in hours, not a hope.
The evenings that can take work without sliding the rest.
What you will refuse when the pin is already holding a full week.