Sorry to hear that, really sorry.
One thing I dont get with similar stories - you felt things are seemingly going to shit in relationship yet no reaction, no quitting but maybe even double down? Abusive people will be abusive with no easy fix in sight, sucking it up for some real estate opportunity is a sure recipe for disaster and misery and no money gained will ever compensate for that. Thats one of 101 of life, there shouldnt be a need to really walk through it to confirm this. Kids do complicate this massively but you dont mention them.
Same for work it seems, working on edge of what you can handle means any little bad thing happening on top can send you over and down the spiral of breakdown.
I dont want to bash anybody and its more for others who will one day experience similar things - listen to your body, its telling you tons of things, and not for just fun. Its your best buddy so dont neglect it, there is no replacement and it really gets weaker with age, sooner than you would like.
I see a lot of high performers ending up similarly - very narrow focus on one brilliance ie work, but deep neglect of the rest. Never a nice story at the end. Nobody will be happy when dying from how much they worked or which investments worked out. If one really has to, set clear short term goals for when to stop it and have a bit of discipline (ie dont get used to better lifestyle that more money brings requiring you to continue).