There are other choices, everything isn't black and white. But given that you have two kids to support, I suggest you evaluate things very very carefully.
- are you running TO something or just running FROM? Electricians do make good money. You're really too young to hurt so much every day, even in a physical job like electrician - have you seen a doctor? Rule out things like anemia or rheumatoid arthritis, inflammation can cause fatigue and aches and pains (as well as depression). What you're experiencing might be due to physical problems. (When I was a little girl, I gave up ballet - which I loved - because I was just too tired to do it. Eventually they figured out I had bad iron-deficiency anemia.)
- assuming your physical health is ok, and you're just tired of your work - evaluate whether it's really the occupation, or just your job that is bothering you. Maybe just changing to a different employer who values you more and is more pleasant to work for? Or maybe you need to ask for a raise?
- making a living in art or graphic design is....well....tough. It's probably not real feasible for you to just change from being an electrician to a low-paid graphic designer. You might need to think outside the box to figure out a way to make a living at it. And it might make more sense for you to experiment with it as a side gig first, before you make the jump from your current job. Also, remember the courts may not look favorably on you if you deliberately change to a much lower paying job - they probably wouldn't lower your child support.
- check out mr money mustache's blog - it might give you some ideas about how to set goals to gain the financial independence to do what you want.
