Stress levels. It's a huge mental burden removed when you pay it off. It gives financial freedom of some sorts. My plan was to pay off my house and quit my job and find something easier on my body. Paying off my mortgage allowed me to financially be able to take any position I wanted even if it was a pay cut. It was about 30k but it was less of a burden and my quality of life is substantially better. At 47 yo it gives him the financial freedom to do whatever he wants. He already has a mm plus in retirement. He couldn't retire early of he wanted without the worry of a house payment.

True. Makes giving blood substantially easier.

You can look at different jobs and openings currently it won't hurt anything. But as it seems you know the grass isn't always greener on the other side. There you may take an increase in pay but what else will you get with a different company that y don't know about yet? I considered taking a different job with a 40% raise. But after interviews and talking with different people there I decided it's not worth going to a more restrictive company. As you said your boss is very flexible. I think you'll have a hard time finding that again.

Lol my previous boss made us read this book. They started it shortly after I left. But I may still grab a copy and read it.

I do lists for each day. The hard part is being consistent in making a good list of be shit you need to do. But once you do that and have a detailed list of things you know you need to do you'll work through it. Not a mental list either.

Write it down. Send yourself scheduled reminders. Annoy the shit out of yourself.