For me, marriage was all my faults and failings magnified.
If you marry wrong for both of you, it is like a cauldron where all bad things distill and both parties begin to look and act like McBeth's witches.
I don't want to marry again because I don't want to see that woman I hated in the mirror.
I told my sons marriage is for mature adult audiences only. Just don't do it until you are well established in your career or have a Masters degree in a marketable profession and have a substantial portfolio ( some of it hidden offshore ). Get out and do the things you want to do. It will all come undone after you get married, children become your priority.
They also saw what their mother did to me in court, that helped.
So don't ~be~ her! Honestly, I don't know what else to say.