That one wasn't self employed, and I quit no long after that. They ended up spending over $100,000 to replace equipment I routinely repaired, and no one else in the country wanted to touch.
I did put in a lot of long hours when starting a business. Sometimes I worked for a couple days straight and did a job that was scheduled to take weeks to complete, sleep a couple days and do the same thing on another big job. That may be why my health is shot, and I'm 100% disabled these days.
Later on when the business was running smooth, if I woke up during the night I would go to the shop and work four or five hours with no one around, and no phone calls to bug me.