I bet you can find enough enjoyment in 0 overtime, long lunch breaks with co-workers, and those articles gathering dust on your reading list to entertain yourself for those 2 months. Not that you shouldn't do work, far from that, but for most people once they quit, emotional attachment to work ceases to exist.

So cut some slack, put in the hours contractually necessary, but don't break your neck being at work 9AM sharp, meeting arbitrary deadlines set by management, or attending the meetings you could have just set to "tentative, but I'll probably pass, thanks".

if you feel so shitty about work that you're getting suicidal im sure a doctor/psychologist will write you a doctors note for those 2 months

That note probably won't do much for your mental health if you _know_ what's on the other side of your break. I think the OPs advice is pretty sound, give yourself some options.

Give notice, then take two months off under FMLA.

For the most part, in the United States, this kind of notice is a courtesy not 100% required.

Are there any states where it's illegal to just walk out? I know you can in New York and all of the Midwest.

I have no legal knowledge, but since that has never stopped anyone on the internet from speculating in the past:

1. Seems like it might be criminal to walk off the job if you're a surgeon in the middle of a operation, firefighter at a fire, etc.

2. Otherwise, it seems possible that you could be sued by your employer for walking off the job but criminal, probably not.

3. If my employer tried to physically prevent me from leaving work, I'd call the police immediately.

I'm in the UK, yes you can get sued.