I suppose I may have lucked out, but I did take my choice of wife very seriously, and much thought went into it. In 10 years, I don't recall even having a fight with my lovely wife. I have never done any of that "whatever you say dear" bull crap. That stuff is for chicken sh*ts or men scared of getting left if they don't comply. If you have to do that, you made a poor choice in wife.
Good marraiges are between two people who have mutual respect for one another, who feel as though the two of them are one, who make decisions together, who talk to one another, who understand each other, who share the same values, who share the same money, etc., etc.
I feel like the man of the household should be the leader, but as the leader, treat his wife with respect she hopefully deserves and treat her as he would himself. The woman should understand that and should be able to trust in him completely, and know that she is always an equal in the relationship.
The keys are TRUST and RESPECT. If both man and wife do not completely trust and respect each other, then that marraige is already on shaky ground. If man and wife can do both unconditionally, then the rest will fall into place.
In my experience, most failed marraiges that I've personally seen unfold, were doomed from the start. The ones who will make it are pretty easy to see. Picking a mate isn't rocket science, but you have to have your head on straight, don't be willing to settle for someone who doesn't jive with you on the most important levels. Certainly, no two people agree on everything, but you gotta agree on the important stuff. Most importantly, don't let your trouser snake do the thinking. That little booger will screw you over bigtime!
That's my $.02