Hopefully someone here will have some experience and suggestions to share that might be helpful to you. The last time I can recall when I had this type of trouble or challenge was in a long-past employment situation where I knew I would likely get "chewed up and spit out", and I eventually did, but I had wanted to go anyway and I actually lasted for a couple of years before having to bail out before the mental-emotional stress could cause a full-blown heart attack. I know that is not exactly what you are asking about, but the best I can share is that I have some wide boundaries I have established for self-protection over the years in situations where no one else is watching out for me.