I had every intention of continuing to work while DH went FIRE, to ease the transition. That didn't work. Then, I had every intention of quitting my job, and immediately starting full or part-time freelance work. After a few days of FIRE, that plan went out the window.
Like other folks on the forums have observed, it took less than a week for me to become accustomed to (more like enamored with) having time to cook a LOT, wake up at whatever time my body intended, tackle house projects that have been waiting for months or years, and so on that I had zero desire to work at all. It just evaporated. (I do have a side/hobby job that I do, but that's it right now, and at that I earn $70-$250 cash a pop, which is great but not critical to anything).
Being able to get health care through Covered California (our state ACA exchange) helped. I started that process weeks before my last day of work.
The nicest surprise is how much less we're spending. We never spent much, obviously, to become FIRE in our late 30s, but without the commute and exhaustion we're REALLY buying nothing but groceries, and not even many of those. We're cooking our way through the many goods that were already in the house and just waiting for us to have more TIME. :)