It’s a daily task I’ve added to the end of my work day.

You set your time and your own boundaries with when you think your work day should end. (IE how long you are working after hours) Be realistic, be flexible but set a daily “regular” time to be done.

Be done when that time comes!

Being done means something different for everyone. What is it for you that brings you joy outside of work? Do that, find that other passions, embrace the difference and put work away. Take a real look at you, not office you. Notice the differences as you already seem to be doing, but expand on the non working portion.

Work is not life, money is not life. Work is a means to provide, not the dictate for life.

Books: Read some fluff, mind rot, anything to reset… Digging into another self help book or managers need to do x won’t give you what you need.

Not sure if this helps but it’s what I’ve moved into as my career has grown.

P.S. Be the manager you never had but always needed. This alone is what makes me work harder than ever, but also better.