I feel like jumping in here...
I did have my own crisis, not at midlife but much earlier on, in response to many stressful factors in my FOO. Early enough that it could be attributed to youthful folly, but I know myself how much of a crisis it was, particularly in hindsight. Deep depression was a part of it. I didn't hurt a husband and children, but certainly did behave very, very badly to my parents, and to a certain extent other family members. And I got involved with someone I shouldn't have. Perhaps I hurt that person when I came out of it, I'm not really sure.
So was it personal? Well, not the same way that our spouse's MLC is against us, but yes, it was a sort of rebellion against my family. Although at the time of course I didn't agree that it was. I was just "choosing to live differently", claiming that I was very happy.
I remember what it was like, that I was just pressing on ahead with the choices I had made, acknowledging those as choices, thinking that what I was doing was right. I also remember the waking-up process.... to outsiders it looked like "one minute I was gone, the next I was back"; but of course it wasn't like that. And coming out of it wasn't without it's stresses, either.
That was now a long time ago, thankfully, and I know I have erased a lot of it (a good thing), but I do remember that all along there were people telling me that I was making a mistake, that I was heading down a wrong path, you name it. I totally refused to listen, even laughed at it, all that. And then I didn't want to come out of it because I didn't want the "I told you so" speeches.
In the end I realised that I HAD been making a huge mistake, and decided to brave the "I told you so"s of which there turned out not to be any..... And then, boy, did I move fast. The whole process took over 5 years, btw....
And I HAD established a totally different life, which proved surprisingly easy to dismantle.... and went back to what was my "real" life, albeit of course with some changes. But I was able to slip back in. And yes, I went around apologising profusely to those I had hurt.
Does that make me any kind of expert? Of course not. But it does give me some empathy, and does affect how I treat, or try to treat, my MLCer. I do remember how I was treated while I was in it, and to this day am a bit distant with those who were very nasty. And I particularly do remember those friends who tried to keep up with me despite also feeling that I was doing wrong.
Yes, it was me making those choices at the time, but a lot did have to do with things that were going on in my family, they weren't without blame, even if they weren't directly responsible for my actions. so that helps me see my own role in things now as well.
Just wanted to say that....