It's not advice per se but I really disagree with the way that a husband leaving his wife is seen as him being a bad father in a way that a wife leaving her husband is in no way seen as her being a bad mother. In fact, in general, it is assumed that marital breakdown is all the fault of the man all the time. I think it's only in very exceptional cases that there isn't fault on both sides.
Of course, sometimes men leaving their wives are also bad fathers but I don't think men have to stay indefinitely in unhappy marriages because otherwise they are abandoning their children - it is possible for divorced men to continue to be good parents.
On a related note, men are expected to contribute - usually equally - to the costs of step-children but any suggestion that a woman contribute anything to the costs of her step-children is met with horror.