Just as a thought exercise, how would your career and finances go if you just put in your notice now and jumped letting yourself figure out the details after you'd had some time to recover?
Short term, have cash to last 12-15 months. I don't have a problem with short term unemployment, I would love to take a break. It's long term unemployment which I am most fearful of.
Long term, I worry about ageism in a job search and my lack of a technical or hard skill. I am also an individual contributor so no managerial or people experience to play up. I'm in a company that pays far more for my skills and experience than I would likely command in other sectors in which I have worked.
If the worst happens and I'd probably muddle through. Due to MMM-lite life, if I never contribute another penny to my investments, I'm on track to FI at 63/64. So, "normal" retirement is entirely possible. I won't end up under a bridge but it wouldn't be the earlier FI date I have envisioned.
I should probably map it out. If I quit, I get rid of the biggest agitation in my life but do I set myself up for emotional and mental issues related to unemployment or underemployment? I know this is a sure sign that I likely am a burnout--I hate the thought of giving up, running away from the problem, etc. I'm afraid I will withdraw and stew if I feel like I gave up.
There's a lot of paddling underwater as I'm sure it's for many others on the forum. If it was simply finance, it would be an easy decision. In the background, there is the ego, self expectation, family obligations and circumstances, higher healthcare cost for myself and pets, etc.