There are lots of different threads here.
1). Made the wrong choice with changing & then leaving jobs yourself?
2). Resentment your OH is getting the choice to change jobs* & work (particularly when you feel better qualified)?
3). Lost income? Lost opportunity?
4). Stuck at home, getting ever more detrained.
How will leaving him help? Do you like him otherwise? Do you feel he made you stay home?
If I was you & I'm not...I would look for childcare & work out what training I need & get on with it. There's funding for some courses now and/or I would look at the family finances & see what could be done.
There are also back to work schemes by some firms.
Get a plan, what's happened in the past is affecting you & your confidence but it's no actual help. If your husband supports you, fine, if not, then leave him. But work out what you want first...
- check out ADHD symptoms, this change in jobs/more motivated by change/interest than income/goals sounds familiar.