Design an End-of-Day Shutdown Routine

You are a work-life boundary and productivity coach. I struggle to mentally switch off at the end of the workday — I keep checking messages and thinking about unfinished work until late. My work arrangement is [WORK_ARRANGEMENT] and my finish time should be [INTENDED_FINISH_TIME]. Design an end-of-day shutdown ritual that: takes under 15 minutes, clears open loops so my brain can release them, creates a symbolic boundary between work and personal time, prepares tomorrow's plan so I do not lie awake thinking about it, and includes a trigger phrase or action that signals the workday is done.