If your job is making you miserable, how are you even worried about some hypothetical future job? You have a 1.1 million dollar safety net and you're worried about having to take a random job. I think this is a classic case of having too much money for to long. You need to make a change but you need to be 100% that change is likely to increase the happiness of the people in your family. You have the finances to live…
I'm at a $22/hr help desk job on the phone for 90% of the day and every morning pray that I don't end up getting killed by a moron on the freeway going to a job I vehemently dislike. I'm only there to buffer my savings while studying and working towards something else but even if it goes to shit I know I have other options (this being in my early 30s and having been unemployed prior).
Having money in the bank and real estate gives you MANY MORE options in terms of a worse case scenario. OP honestly might just need a break (I like the sabbatical idea) and/or long periods of time to think about themselves and what they want vs reacting. Don't let anxiety get the best of you, especially in terms of making drastic moves. Off the cuff, it might even be a good idea to check in with a therapist. Even being relatively cash-conscious, I found seeing a therapist on a sliding scale for a couple months while unemployed to be extremely helpful.