You might think men and women approach mating in similar ways. And on some aspects they do. On others, they're very different.
We live in a world where we're constantly told men and women are interchangeable and that men's wants are women's wants and women's wants are men's. In some cases for some things this is true... but in many cases and for many things it isn't.
The trouble this error-filled belief system can lead to is multi-layered. If you have a girlfriend, a female friend, a friend-with-benefits, or wife you think is "just like you" whom you think thinks about things "just like I do" and whom you believe wants "all the same things I do", you'll be a lot more open to and uncritical toward her suggestions. That's fine for things where there is no conflict of interest between your and her life and mating motivations.
Where there is conflict, however, her positions may quickly mislead you... without you, if you hold this "men and women are basically the same and largely interchangeable" philosophy, even fully realizing you've allowed yourself to be misled.
It's crucial for your power and sanity as a man to realize that while a good woman's advice can often be prudent, it isn't always... and that there are differences between male and female motivations, and you must always keep these in mind.
You need to know when sex differences enter into play. And you need to be wary of when the counsel you receive may be biased against what is truly in your interests due to competing sexual interests.