You've got to know when to hold 'em
Know when to fold 'em
Know when to walk away
Know when to run
And don't take your work with you. Leave it in your classroom. I hate to say it, but if you're spending so much of your time outside of the school day working on school work, you might need to think again about the way you are doing things. Just because you don't go to work for a couple of months in the summer does not mean that you have to make up those missed hours during the school year. Is that what your contract says?
I think of the old comparison that's made with the safety protocol on an airplane.
Oxygen and the air pressure are always being monitored. In the event of a decompression, an oxygen mask will automatically appear in front of you. To start the flow of oxygen, pull the mask towards you. Place it firmly over your nose and mouth, secure the elastic band behind your head, and breathe normally. Although the bag does not inflate, oxygen is flowing to the mask. If you are travelling with a child or someone who requires assistance, secure your mask on first, and then assist the other person. Keep your mask on until a uniformed crew member advises you to remove it.
This should be irrefutable.
I guess I was in high school when I first used the KISS acronym: Keep It Simple, Stupid. Whether you want to use the word stupid or not is not the point; the rest of the term is the point. Keep it simple. Are you making your task more difficult than it needs to be? Is there an easier way to take care of your responsibilities? Are your priorities in order?
You can still be effective - in fact, you can still flourish in your career and greatly affect your class - and work smart, not hard. Please stop. Smell some flowers. Hug your children. Love your spouse. Nourish yourself. Mow your lawn. Take some time to watch a classic RomCom on TCM.
Do your job, and do it well, but take care of yourself along the way.